[sarnowski]

What degree of „searchable“ are you missing from apropos?

https://man.openbsd.org/apropos.1

[eviks]

All of the basics of anything google-like: typo-friendliness with word forms and phrases, links to source, formatting of output, GUI, or not spamming the output with a dozen of lines of warnings that some man page files are missing.

Then a bunch more degrees that I could know about if the tool were more usable

[BLanen]

Yes.

I mostly use man pages when I already basically know the program and need to do specific thing.

Even then I don't use man itself but usually a webpage of the manfile because of UX.