The whole 'alterhuman' movement feels like it has become an 'everyone is valid and welcome' movement more than one that provides for our communities. At first it seemed a useful term for those who had overlapping experiences but now? Seeing that basically anything can be classed as 'alt-h', why use the term at all?
I also don't agree with the selection of communities that are being sucked under the label. This whole idea of 'you are alth if you call yourself alth' reduces the concepts of otherkinity and the like to stickers we can choose to slap on our chest.
With my somewhat limited experience in the therian community I feel like separation from Alt-H would be very beneficial, especially for new folks who may be confused by the ideas given off by Alt-H. Let them experience grilling, show them history, let them see what animality is like.
As for otherkin.. a separation feels logical. There are such distinct vibes between our communities that it seems odd to constantly define therianthropy as a 'subgroup of otherkinity'. Kinda erases the history and development of weres as their own group, I find.
But I am just a lizard with more experience in the youth spots like Instagram and Amino, so not sure if what I feel is considered the norm or not