I don't think it's a "bad" license for research; I just think a person's ideals as far as open source licensing is concerned are their own business. It's not like if you pick one over the other people are gonna die. So let people choose it according to their principles instead of fighting them on it.
But if a researcher wants to use GPL because they want anyone who uses the code to be forced to distribute the source code wherever they distribute the program, then that's OK too. If the research is impactful enough, it'll still get used.