Like many people, I think there's been significant mismanagement around the club even up to the present, particularly around recruitment structure /football exec, which is what most of us are able to have a more 'informed' opinion on, given the results and the picture provided by leaks. In this case though, Arnold was in an unconscionable situation, as the attitude displayed towards MG by large parts of this very forum exemplifies.
You have an investigation which confirms what the CPS decision, statement and other evidence (MG and partner reuniting, leaks about family supporting MG; statements, direct and second-hand, on social media from the the young woman and her friends regarding the circumstances in which the visual and audio material was produced and entered the public domain) suggested. You have a player cleared of charges, supported and vouched for by the person he's been previously accused of assaulting, a player who asserts he's changed his behaviour and by all accounts shows signs of it - behaviour here referring to the less contested incidents of adultery as well as being verbally antagonistic to his partner when challenged, general indiscipline with regards to personal conduct. A player under contract, essentially co-raised by the club through the youth system, as well as a valuable asset. Meanwhile, the former accuser indicates that in terms of 'their interest', it lies with MG being allowed to play for the club.
As far as the facts can be established, based on what's available in the public record in the form of corroborated statements, the person who's been hurt most by Mg's previous conduct and whom he owes an apology for whatever he actually did - things which the evidence suggests don't match up to what was originally claimed, but might still qualify as 'toxic behaviour'.... has forgiven him. From a crime, it becomes domestic dispute; the territory not of public interest or the club's concern, but of MG's personal responsibilities to his partner.
Then you have a media keen to make hay out of any scandal, whether relating to players or club managemet, regardless of new facts, along with people keen to make a casue celebre out of this, either for organizational reasons, virtue signalling and oppositional fandom. You have visual materials which, instead of being qualified with new evidence, people are asked to disregard based upon a prior judgement arrived at through knowledge of facts which can't be made public. Instead of taking this latter factor into account, people are driven to regard this as another form of conspiracy to exculpate MG - driven by mimetic or peer pressure and signalling that they're not toxic, they don't support toxic behaviour, they're virtuous. I've argued that you could produce equally 'explicit' evidence of the materials being fabricated wholesale (nb I don't believe this... again, because there isn't currently evidence to suggest the audio material was deepfaked, and I at least try and follow the evidence) , and this wouldn't change the judgement of a significant number of people. Instead, it would just see the creation of new forms of quasi-conspiratorial thinking. It's not 'stupidity' ( twitter and the forum have quite a 'range' of participants, but the Athletic aren't idiots; Rachel Riley is, in formal terms, a 'smart' person, if not always an honest one) but motivated reasoning.
So you have supposedly responsible, reflective journalists, elsewhere able to weight things fairly objectively, acting in extremely disingenuous ways and essentially turning decisions made under the pressure of contradictions, into a kind of failing, condemning the club for not passing summary judgement, for not simply taking at face value evidence that the law itself as well as interviews have indicated should be interpreted quite differently and the particular, substantive 'difference of circumstance' is unknown to the same journalist. Social media, along with a media ecosystem that has demolished the distinction between 'alleged' and 'is' (despite libel law), between personal matters and public interest, between small scandals and scandals of national mismanagement and ecological destruction, mean that no kind of reasonable debate can be had about this as soon as there's sufficient pressure from one or more 'old' or 'new' (social media) public figures. Questions of responsibility to the facts as presented as well as to the difference between innuendo/supposition and judgment under the law disappear, boosted by people who, in a terrible irony, claim the moral high ground. So, however well he gets paid, however partially implicated he is in the Glazers ongoing squatting and extraction, in this case, at least, I have to slightly sympathise with Arnold.