@AasaMariaHedberg From reading your description, it sounds very much like the situation in the US as far as I can tell (I am an outsider to the ceramics community).
While I haven't noticed *overt* stigma around "potter", there seems to be an assumption of it it being a leisure or part-time pursuit, working artists usually don't use "potter" on its own and either use a qualifier like "professional" or an alternate term like "ceramic artist".