While I personally wouldn't go as far as to call people self-centered, I do think Mr Blott has a point, a lot of people may think they are self-centered for immediately declaring their pronouns (or anything else other than your name for that matter).
Anyway, that wasn't what I was trying to say. All I wanted to say is that I don't think that announcing your pronouns is something that will be or should be normalized, since it's pointless for the vast majority of people. I do understand why some people would prefer to do this anyway to avoid the awkward situations like "ahem, actually it's... euuh... he, not she", and I don't have a problem with that.
Fair point, it doesn't hurt to include it. But my point is that in most cases it's irrelevant and it isn't something everyone has to start doing.
When I go outside and look around me, 99% of the people don't need to tell me what their pronouns are, because I guess simply guess them with high certainty based on how they look. You might disagree with this if you feel like everyone should be able to choose their own pronouns (which is fine by me), but in reality most people don't want to tell you their pronouns, they want you to look at them and just know.