A lot of good points on this thread here from you mate.
As it happens, I really like Gordon. I can see though it's a very subjective judgement, that sometimes you just get a feel for a player. I saw an article in the Athletic which mentioned they may see him as a central midfielder long term, and I could see that actualy, given how he performed away at Spurs last season. For me, Gordon is incredibly skilled at carrying the ball and weaving past people. I said he reminded me of Mcmanaman and I stick by that. He has more to his game too, he can pass, cross, shoot (though he needs to be more selfish).I also think he will keep growing, and be quite tall, but will be very slim as well. He can tackle and hold position too.
However even with all that in mind we have to weigh other things in. I don't get people getting at Ancelotti for not playing him. As you've said, he was nowhere near selection before Ancelotti came. It was questionable he'd even start a game, he was where Ellis Simms is now. Ancelotti has developed him to a point where he can play, so if he think's he's ready he will play him.
We can all go overboard in lockdown a bit. I was very impressed with Brainthwaite and Gordon but ultimately they wrre the bright spot on a poor team. They still made mistakes but did some good things too. It's right that fans accentuate the positive, and we know that as they get older/stronger the negatives will become less. But if you're Ancelotti and want a team that wins, what you see is a lad who did ok in a team that lost. He has to get to the next level and show it in training. The rhetoric for Calver Lewin and Richarlinson has changed too, he wants them scoring 20+ goals. That's the expectations he brings.
We should be grateful for that. We saw Stones, and to a degree Deulofeu, Barkley and Lukaku stagnate here under Martinez. You could piut minutes stats up and they were all really high, but none of them got more consistent. They were brilliant for a 19 year old, and incosistent at 22. Ancelotti is not going to leave a lad in the team like Stones was to keep making mistakes every week- to get "get it out of his system" before we move him on. They will need to show him they won't make mistakes.
There will be winners and losers from this. For every Calvert Lewin, or Holgate or (we hope) Richarlinson, looks to be a Bernard, an Iwobi, a Gomes, a Kenny. Players who just aren't able to go to the next level. They will start being cleared out. If Gordon can't get consistent, he will be too, but obviously has a lot more time. Or it could be the making of him, and he goes from being an excellent 19 yar old, into an excellent 22/23 year old like Richarlinson is.