I’ve updated my comment.
I’ve updated my comment.
Edit: it appears the PWA support in Firefox is not ideal, see responses to this comment.
Chromium is not an offshoot of Chrome, it’s more of a precursor to Chrome, and it is completely controlled by Google. As such, it will also drop support for extensions that do not support Manifest v3.
If you want to enable PWA support in Firefox, it looks like this is possible (however the experience doesn’t seem to be great, see responses to this comment): https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Guides/Installing
For other browser suggestions see, e.g. https://www.xda-developers.com/4-browsers-manifest-v2-ublock-origin/
If you wanted to support all possible drivers, you would basically need to rewrite the entire kernel. You could make one specific anticheat work by supporting its specific calls, but this will take a lot of work, and will probably be broken with the first ever update.
In the past there were projects that supported specific types of drivers, such as ndiswrapper, but that had a very limited scope.
Here’s also an answer to a similar question: https://unix.stackexchange.com/questions/544776/installing-proprietary-windows-drivers-on-linux
“take a decision” is also a valid phrase: https://www.merriam-webster.com/dictionary/take a decision
One problem with that is that you will end up with two EFI partitions. This is not supported very well by anything, really, so you will run the risk of Windows messing with the wrong partition anyway.