I enabled fingerprint blocking on Firefox after reading this. Does it break a lot of websites? This site says some banks use it to authenticate. https://medium.com/slido-dev-blog/we-collected-500-000-brows...
Apparently they take a 'only criminals would clear cookies' approach.
Still not an absolute one should be unequivocally confident in, but risk management types for a major bank... probably don't care.
Clearly information security is their forte /s