I don't have an issue with adding a custom tag. I just don't understand why to add bloat when there is no need to.
But if everyone is ok with.. then.. bloat it is.
I certainly prefer to keep kind 1 clean with simple NIP 27 uris for every tipe of event. But looks like no one cares about that these days.
NIP 95 won't offer an option for a tag (there is no URL) so... I really don't think custom tags are a good design pattern. People will have to deal with other events sooner or later.