Android being open source based, Google can't realistically stop bloatware.
They can theoretically tie the bloatware ban to the Play Store license, like how they force OEMs to install Chrome, Maps and YouTube if they want to have Play Store on their phone, but alternative stores are already on the rise after recent controversies (deleting negative reviews (robinhood, tiktok), deleting unwanted apps from store (fortnite, parler), regional app blocking (tiktok in india)), and doing so would probably just push OEMs to abandon play store in favor of their own store...
I got a ROG Phone 3 recently, and while it does come with some OEM software, most of it is actually pretty useful. The only obvious "yeah you were paid to put this crap on my phone, not because you thought it improved the experience" application was Netflix, which - while entirely useless to me - is a pretty decent showing as far as OEM bloatware goes.
Still not quite as clean as a Nexus/Pixel but the best install experience I've ever had on any non-Google device, and the only one I've ever decided not to install a fresh ROM on.
They can theoretically tie the bloatware ban to the Play Store license, like how they force OEMs to install Chrome, Maps and YouTube if they want to have Play Store on their phone, but alternative stores are already on the rise after recent controversies (deleting negative reviews (robinhood, tiktok), deleting unwanted apps from store (fortnite, parler), regional app blocking (tiktok in india)), and doing so would probably just push OEMs to abandon play store in favor of their own store...