You are literally the first person I'm hearing this from. When has any company acquired under Microsoft seen more polish? I think you are getting some unrealistic expectations for the game, MS is not Sony, they have much less interference with development which should be very obvious with Halo Infinite's development problems.
It's still going to be a Bethesda game, jank and all. And yes some people do find their jank charming, it's not a crazy thing.
If you really think that it's illogical to expect some more polish when someone like M buy you especially when you have an history of releasing broken games then we can stop discussing dude.
People never talk about that because usually the big acquisitions that we discuss in forum are about decent\good teams that release acceptably polished games already, but you can return reading the bethesda acquisition topic and you are gonna read a lot of people hoping for more polish\animations\production values after the fact was announced.
And even if we don't talk about it, even stevie wonder noticed the improvements in production values in housemarque latest game compared to their oldest titles, if you think that sony money has nothing to do with it, then thing again...
Sony has the Ice team that share improvements from one team to another, guerrilla even helped a non-first party studio like the kojima one by gifting an entire new graphical engine just because he was making a game for ps4.
If you buy a studio who has some problems that can be partially solved by pouring some money to hire more people and you don't do that, then you have a management problem or you just don't care about improving the games in your portfolio, and everyone and their mother know that bethesda games can be improved A LOT.
Not saying that it always work, but it CAN work and that's already a step forward compared to do nothing except waiting for the modders.