>Do you ever need a website you're visiting translated?

Yes, I have an extension for that.

>Have you ever not understood a term or phrase on a website and had to go to wikipedia/urbandictionary/google to explain it?

I have an extension that double clicks and brings up a quick definition. If I need more, I will go to the dictionary.

>Have you ever wanted to do a 'fuzzy search' of a 300 page document (where you don't know the exact string of text to ctrl-f, but want to see where they talk about a particular topic)?

No, not really. Ctrl + F search for a dozen substrings, use table of contents if available, and I can narrow it down. This takes a few minutes.

And if I did, I'd find an extension. You see the pattern here? We solved this issue decades ago.