I was going into it with a similar thought to you (in some regards), I intend it to be a way to link to something, letting a user choose their platform. Ideally it'll be implemented by developers so users will never need to write the link. One developer (dannychain) has already implemented it Here to provide a platform-agnostic link to my hive engine witnesses' profile, letting the user decide.
I hope that has cleared it up for you, and I'd be happy to hear any feedback you have!
It makes more sense now thank you, it still feels a bit like hard work for a user to change any link they share from hive.blog to hivel.ink but there is an obvious big advantage for app developers
Yeah, for sure. Maybe I should've run it at peakxd.com :D