npub1yyx7sllvsrr0fauh2rdlqk5rakf3963g9xk4a7j5uhfcs00lr3kq42qa5g (npub1yyx…qa5g) Like you, I am aware that "amateur's" original meaning is what we would today call an enthusiast, but you cannot be unaware of the negative connotations it carries today - "the plumber did an amateurish job" for example.
Even quite long ago this was the case, which is why we had "gentleman scientists" instead of amateur scientists.