Weiss has a whole bet din just for giyur. So he must do a whole bunch of illegitimate conversions. And if the geirus is illegitimate it is irrelevant if these people live in Bnei Brak or Lakewood.
It is because of comments like * yours* that people think Dati Leumi are less Jewish than people of Lakewood or Bnei Brak. It is attitudes like the one you expressed that leads to acceptance of illegitimate geirus by unqualified individuals and mamzerim when those same rabbis involve themselves in gittin and use fabricated heterim that have been dismissed by all leading poskim.
I would call not accepting Weiss’ certifications , conversions or gittin as halachlicly mandated, if not just prudent. To call it a political issue is excusing the inexcusable.