Novelty, Avraham Avinu did not do kiruv rechokim, there was no Judaism at the time. The converts he made were not Jewish converts, they were pagans who served idols and he taught them to serve Hashem. Noach also didn’t have to find specifically Jews and make them specifically Torah observant. That was completely different than bringing people who are supposed to be Jewish.
Now the Lubavitche Rebbe, the Skulene Rebbe and even Rav Meir Shutter made baal teshuvas in a different world. The world of today is another 2-4 generations removed from their Jewish observant ancestor. It is a world of trans and gays and we don’t want these people within our midst. To deny reality is be delibertely blind and chase a goal that will bring disaster in our midst.
If I may ask, did you become frum in the last decade or earlier? From how you write I am guessing that you are a long-time baal teshuva. This generation of secular Jews ( and yet again today it’s much harder to know if those who claim to be are Jews are truly Jews) are completely and totally different to ones decades ago when people still had moral values despite being secular.