There are, but they're even more bulky, and they are waterproof in the sense that the water wouldn't damage the device, but the port itself is still vulnerable, and very much so. Unless it has a flap, but no regular phone used that ever.

You will wear ze buds

Gotta defend wireless earbuds a bit. They do add a lot of convenience for everyday activities. I'd never want to go back to wired for running, the cable flapping around is just too annoying. I also like them more for commuting and (grocery) shopping, I just kept getting tangled up when putting a bag or backpack on and off.

But nobody is forced to use them. If you're on a budget, get an adaptor that isn't clunky. For audiophile needs, adaptors, different cables, mobile DACs or dedicated music players are usually used, the latter usually with headphone jacks.