The questionable methodology and ethics of the Kinsey bunch should leave them out of any survey that people expect to take seriously. Unless the purpose of the survey is to show how twisted Kinsey and company were.
That was my first thought, too. My second thought was that the left cites Kinsey’s garbage for all kinds of things, so they will have a hard time attacking his credibility even if they can succeed in falsely attacking the other studies. Therefore, citing Kinsey actually makes sense in this rare context.
You’re right — the Kinsey report used criminals and mentally ill people int heir survey. The report has been discredited.