At the risk of over-simplifying:
1. We were ROTTING away under Ten Hag.
We scored 57 goals under him last season and didn't add game changing attacking players over the summer. We scored 5 goals in our first 7 games of the season. Amorim came to a demoralized club that was in utter disarray.
2. Our squad is horribly unbalanced and lacking quality in important areas.
Does this point need any elaborating? Casemiro and Eriksen are 2/5 of our midfield options and they are past it. We have the least productive group of attacking players at the club since the mid-1980s. We have a grand total of two working full-backs. Ten Hag's reign left an inadequate squad of substandard players.
3. We have had a truly punishing run of fixtures during the busiest time of the season.
In our last six league games, we have played 5 teams in the top 6 (technically Bournemouth are now 7th but have been in the top six over Christmas time). Sometimes the fixture list is cruel, it happens.
4. New manager installed mid-season, with an obvious lack of time to train the squad and implement new ideas.
Again, does this need elaborating? I know what some will say: then why are we trying to implement new ideas? Well, the old ones weren't working either and we have a manager who has a clear vision and belief in his principles.
There is even more context to provide further mitigation of our (truly dire) recent form, but I feel it shouldn't be necessary. The points above say it all and this is why Amorim said what he said about a storm ahead etc.
Sometimes it is actually so simple: we are in a horrible run, there was a good chance this was going to happen, so we need to keep our heads above water, get through the turbulence to a more manageable run of games (coming after the next two fixtures, hopefully) and until then remain together. In the age of social media, this is hard to do, but I personally encourage people to take a step back and unplug a bit from the discourse taking place between the games.
I just don't see how anyone can be subjecting Amorim to ultimata or warnings about his future at this early stage in the piece. The man left a champion machine that he built so that he could take over this shit heap in the middle of the season. I say we stand in his corner.