Credits don't only give thanks to the product creator, they also tell the rest of us what you used. I can't count the number of times I've seen renders and thought "that (thing) is exactly what I need for this project, I wonder where they got it" and then no credits. Off I go to try and find out where they got (thing), or if they post worked it. I always appreciate those who put up credits for this reason. Just something else to think about. Unzipped