@deadsuperhero @notclacke @schmittlauch yeah I get that, and people are fairly familiar with email-like ids. I'm not arguing against clients supporting that for composition of addressing anyway, but it does bother me that Mastodon uses Webfinger for some sources of information where it shouldn't matter for protocol'y things
I think that could hold back some exciting future things if it remains. But fortunately my suspicion is that it won't be hard for mastodon to evolve there.