Don't think we disagree; more of a matter of detail. I would argue that there are many reasons why Albion failed to play further forward but agree with your bottom line. Just think it might need a little more work than you imply.
Doubt many would disagree with that. IMO the big miss is ACM; three PL goals from CM all season (Kayal, Stephens, Propper one each) is nowhere near enough. Think Propper (who has one goal in 75 League appearances for Brighton compared to 3 in 14 for Netherlands) is one player who might prosper...
Of course, but so it goes on. You could say there was only one thing wrong: an inability to score enough goals to win games, but unpick that and you get a myriad of causes.
Indeed:
1. 3 wins out of last 23 PL games;
2. No goal from open play in last 9 PL games of season;
3. W0 D2 L6 against four closest rivals;
4. 14 points in second half of season;
5. fewest touches of any PL team in opposition box.
I could go on to the digits on other hand and both feet but...