The "new" store doesn't get rid of this, and they have not announced any intention to get rid of it.
yeah until they change this and other problems, win10 versions are often going to be inferior to the respective steam versions. even if they might have other perks like playanywhere or the xbox achievement system.
years later it all seems cobbled together with no attempt at trying to beat or even match steam at providing the best user experience. it works most of the time, but that isn't good enough. 95% of my PC games library is on steam, but over the last year probably 90% of the issues i've run into while PC gaming are due to microsoft's bullshittery, not steam.
no uniform cloud saves - and sometimes, uninstalling the game will delete your saves altogether, with no option to save them if you want to play the game in the future. even microsoft's own games, like minecraft dungeons, do this. why no cloud saves or user autonomy over saves? who knows?
often different save game formats between win10 and steam - makes transferring progress a pain, if not impossible
no parity with patches on other PC storefronts due to certification delays
no uniform achievement requirement - compare to xbox, where every game has to have achievements.
often no options for exclusive fullscreen - borderless windowed is good enough in most cases, but sometimes it isn't.
i could go on with these complaints.
then there's just the everyday experience of downloading and launching a game, which you'd think is simple, but sometimes they can't even get that right. their flagship title, halo infinite, didn't even launch on PC for me when i tried to play the campaign. instead it opened the store in the "gaming services" store page --
something that a fair amount of other people experienced. fortunately the fix is simple, but users shouldn't have to deal with this crap just because they're trying to launch a game.