This is what I like about chrome extensions, you can modify things, store your own stuff, etc... I am curious I don't think Wikipedia does it/would do it but I

This is what I like about chrome extensions, you can modify things, store your own stuff, etc... I am curious I don't think Wikipedia does it/would do it but I have seen some sites break if you modify their DOM. I think including CSS overrides would be different but YT is an example where injecting something into their DOM has an error show up in console. Wondering if that was a concern for you.