Just to clear things up, there are two attacks being touted right now.

The Anonymint attack, that might only affect Monero, (As Zoidberg said), apparently Tacotime has been working on a fix for some time.

The BCX attack, which is pure fantasy. If the BCX attack exists, it'll likely effect BBR too, however I am 99% sure that BCX is being the biggest troll here.

Why make a 500 bitcoin bet, when you can steal that amount instead?