This is true. I think the OP did either very well to trigger people emotions in this thread, or used poor wording ("meaningless", " regardless of finishing ability") and sold his idea badly. Anyway, if you don't talk about extremes, finishing doesn't play that important part in grand scheme of things over a season. Of course, people to remember a single instance (game, or even a shot) where player X missed a chance therefore he's a poor finisher, but tend to ignore other games where player X actually got on the lucky side. In the end it all evens out, but imagine missing a chance in a final! Even if there was only one 3 shooting chances to their 10, we lost because of poor finishing, didn't we?
Interesting fact from last season is that Haaland was far below average for finishing. The reason why he ended up with most goals scored is supporting OP idea, shame he didn't use this argument that movement/positioning and finding those high xG situations is actually the key. In a totally made up scenario that Hojlund keeps up his scoring rate from last season, but gets the same chances as Haaland, he actually scores something like 9 goals more than him over the whole season. His finishing was very good, but he only managed to get like 10 chances compared to Haaland 30 (figuratively speaking).
Another controversial opinion is current United (last season, and this one) is suffering because of low confidence affecting the finishing composure rather than poor ability itself. And some bad luck that I'd expect to flip soon.