No, one does not have to respond to “citation-needed” requests for bolstering arguments. Others are perfectly free to discredit me for that, ignore what I am saying, that is fine, but nobody is “required” and nobody “should” engage with that in every case.

In this particular case I think the arguments have been repeated many times across all the different GME threads. My goal is not to repeat them here, only to register dissent, which is a perfectly valid goal for me to have.