[asocial]

No it isn't, it's the way open source is supposed to work. There being 92 pages of routers doesn't stop anyone from picking the most popular and well-maintained one. Almost anyone who actually cares is going to pick one of the large frameworks (which probably use Symfony) or use nikic's FastRoute. If you're worried about small packages being maintained into the future, that's what forking is for. If you want to write your own, you can.

Also, to be fair to your argument, Composer will load packages from outside Packagist, and VCS systems other than git, so the actual universe of available routers is probably much, much bigger. I'd suggest this as another example of how not conforming to a standard (Packagist as the de facto PHP repository) is a benefit. You don't even have to care about Packagist and Composer still works just fine.