Also, the lashon of the rivash (i can get other sources, but again they’re in birkas shmuel – also in the sefer “besoraso yehegeh” he goes through the issue at length, citing the cherem of the rashba, and others) is that one should learn only mikra, mishnah, gemara and poskim – that means not math, science, etc…
Even if – and this is not the case – today’s chochmos are more true, what bearing does that have? He’s not qualifying his statement on how true a chochma is, he’s saying that only torah frants a person olam hazeh and olam haba. Do you think you get olam haba for learning math? Norman lamm does, and he was a heretic.