You’re missing my point.

I’m not against browsers having features. They can add whatever they want. Devs can target them too.

But “the web”, the platform, the standards process, the language specs, the method of their development is all about maintaining access for the widest range of users for the longest time possible. Or it was. There’s nothing about it stopping you from restricting your own market to support users and devices you want to support… but insisting all mainstream browsers support all the brandest-newest features because ONE of them added it does a disservice to the platform.