My experience is exactly the opposite. I don’t work for a FAANG but I’ve been around the block a bit. Its always the junior devs that try and add new warnings etc to the code base. I always require warnings to be cleaned up even if that means disabling specific instances (but not the whole rule) because the rule is flagging a false negative.
It boils down to desensitization/normalization. Warnings (and errors, of course, but tests as well) exist for a reason. If you don’t care about these gauge constructs are telling you, then they have no real diagnostic value. Getting into a place where you’re not looking at how your systems are actually running is generally a bad idea, especially in the long run.