Bitcoin is Byzantine resilient because of PoW and Game theory. Bitcoin follows Nakamoto consensus, but all Byzantine consensus algos are only resistant up to 51% or less.
Before satoshi, byzantine agreement models could only deal with 33% bad actors.
Which is why I suggest Nakamoto and Byzantine algos can reach up to 51%. There is no denying the importance of PoW and Nakamoto consensus which is essentially a form of a pseudonymous Byzantine consensus. It only solves the Byzantine generals problem to a probabilistic degree of trust and not completely. we shouldn't overstate our case and suggest it solves the dilemma or consider bitcoin trustless. There is a real tangible crisis occurring where bitcoins security is both increasing as hash rate increases and decreasing as nodes drop and mining becomes centralized. This trend may reverse but no one has proven solutions yet.