Yes, bunker buster was used. Per a different source:

> It included a strike on the heavily-fortified Fordo nuclear site, according to Trump, which is located roughly 300 feet under a mountain about 100 miles south of Tehran. It's a move that Israel has been lobbying the U.S. to carry out, given that only the U.S. has the kind of powerful "bunker buster" bomb capable of reaching the site. Known as the GBU-57 MOP (Massive Ordnance Penetrator), the bomb can only be transported by one specific U.S. warplane, the B-2 stealth bomber, due to its immense 30,000 pound weight.

https://www.npr.org/2025/06/21/nx-s1-5441127/iran-us-strike-...

I read the article in full. There is no confirmation of using GBU-57 in the strike. Re-read your quoted section. The English is a bit convoluted, but does do not confirm usage.

Tin foil hat engaged: For all we know special forces detonated plastic explosives deep on site after doors were blown off.

More seriously: Nothing has been confirmed except a Truth Social post.