I’ve had a similar experience, but if someone called a method a function or vice versa, it’s never been unclear what they meant. And it’s never been something that people would have felt the need to correct someone on.

I am aware of the distinction and I (probably?) instinctively use the two terms “correctly” the majority of the time. But if I just picked one or the other and used that word 100% of the time I would wager there would be zero confusion, except amongst pedants.

For what it’s worth, I say this as an avowed pedant.