Nothing to it. He was appointed to EDNY, under Reagan. Most of the current investigations involving Trump fall under SDNY jurisdiction. His appointment to the FISA court was in 2012, under Roberts. They serve a seven-year term on a rotating basis. His term will be up in July.
I'm not going to argue about who the FISC Judges are, or whether they show bias based on who put them on the Court. It isn't relevant (to me).
My concern is they haven't been doing due diligence. They are not supposed to rubber-stamp warrants, they are supposed to
judge whether or not issuing warrants that result in spying on Americans. That's why there's a court, so the DoJ has a check to keep it from being used as a tool for political purposes.
Whomever it was, and who appointed them is beside the point. All but the one who rejected the first warrant application failed to check the DoJ.