But I don't NEED a wheel, I just need a tarp to put over this metal frame on my patio, and for some reason the tarp manufacturer attaches wheels and plane wings to it!?

Until those wheels contain malware and spyware.

The problem is "I need function, library with 1000 functions has function, include." Library's 823rd function turns out to have a vulnerability.

"Yes, I'd like a wheel. I don't want to invent it. Why, of course, give me the full package of wheel, axis, rotor, engine, fuel tank, windshield, mirrors, tire, front panel, brakes. This wheel will be great for me manually spinning cotton!"

You say that, but I've watched the JS community move from one framework and tool suite to the next quite rapidly. By my recollection, I've seen a wholesale change in popular tooling at least four times in the last decade. Granted, that's not every developer's trajectory through all this, but (IMO) that's still a lot.

Is this why pip packages are called wheels...?

Yes, but my moon rover's wheels need to fulfill different requirements.