I think it's a few things.
Some teams are easy to read and I think Villa are one of them, tippy tappy football out from the back. Despite what people say about Moyes he's a very good tactician, reads the opposition well and sets his team up to suit away from home.
When we are at home it's totally different, we are expected to be on the front foot and the away teams read us like a book and set up well against us.
I think at home everything needs to be a bit quicker and you will see a different team, Grealish needs to let it go quicker.
We are also a little defensive minded when at home and I think it confuses the players. How many times do you see our wingers knocking it backwards, when for me at home it should be all out attack.
Then there is the mindset, we should have a defensive mindset away, and an all out attack mindset at home. We have the away mindset sorted, at home we look confused sometimes.
We seem to feel the expectation at home and I think the reigns need loosening at BMD and the players told to go out and enjoy it rather than playing chess at home like we do away.
That makes sense, but it's not what's happening really.
We've never set up to control a game or even try to, home or away, and we use more or less the same tactics but different personnel, and it doesn't work that way.
Moyes finds a way to play away from home (a RB at RB, not a CB there, etc.) but then forgets all about it at home and we revert to overly cautious for some reason. A very good tactician will have more than 1 way to play is what I'm saying.
Again, we're doing well beyond what I'd expected and he deserves credit, but these are the exact same criticisms WHAM fans of him when he was there. We can all pretend and point and laugh at them wanting prettier football or whatever people believe in their heads, but the (few) normal fans they had criticised exactly this - they got smashed at home regularly, with Declan Rice and a team that went on to fluke its way to a euro cup, because they had no setup for anything there in the PL.
End of the day, we all knew what we got with
Moyes - the stubbornness is par for the course with him, and that won't change now, considering it hasn't for well over 20 years.