1. It is required by CC-BY4 license
2. You seems to be like don't have moral right tell creator what license to use...
?
It isn't fair to do -1 star just because you don't like the license and it looks like a manipulation (looks, I don't say that it is but it looks like).
Credits are part of the CC-BY4 license...
Everyone has their evaluation criteria.
I changed the requirements to make it easier for people to provide credit.
nice, 5 stars
