I actually prefer auto-loading, which lets you iterate through a package manager much easier/faster - PHP iterated through PSR-0[0] before landing on PSR-4[1], and you can always build your own (which is what most frameworks pre-composer were doing).

With Rails 7 and Zeitwerk, the Ruby community has landed on a very similar auto-loading system as PHP now[2] with constants translating to paths by convention.

[0]: https://github.com/php-fig/fig-standards/blob/master/accepte...

[1]: https://www.php-fig.org/psr/psr-4/

[2]: https://github.com/fxn/zeitwerk#the-idea-file-paths-match-co...