Description of the need
I suspect that most people who enable the core Contact form do so in order to allow visitors to contact them, without needing to provide their email address publicly. As such, I also believe that most emails recieved through the contact form have nothing to do with feedback about the website itself (that seems like a very specific use-case).
Proposed solution
I therefore propose renaming the default Contact form category from "Website feedback" to something like "Website enquiry", or just "Enquiry". To me this seems more generic and a better default option.
Alternatives that have been considered
Users can always just edit the default category themselves (I personally have to do that all the time).
Additional information

Recent comments
Thanks, bugfolder! (if only I had added another page before panicking)
Taxonomy term description at bottom?
This issue just got fixed in core code: https://github.com/backdrop/backdrop-issues/issues/7060 You can apply the patch from this PR to your installation: https://github.com/...
Taxonomy term description at bottom?
There was a Layout Paragraphs update recently in the Backdrop news feed.
Layout Paragraphs?