i have never seen a .nomedia file on linux, not once in the 4 years i've been daily driving it. Nextcloud might use it? Idk i host my services like a true linux user (fully self hosted) so i don't have to deal with shitty software.

Regardless it's still just not a good format. It's standard in the sense that it's a .nomedia file, i suppose, that doesn't mean the implementation is going to be standard, or that it will even adhere to it at all.

It being hidden when browsing itself is a UI concern itself. Can't wait for that to be confusing.

It just seems highly fragile to have the filesystem itself tell an application maybe what to be doing with those files. I'd much rather have it be based on any other form of data structure.