That's fine. It just comes across as antagonizing sometimes.
Humans, like most sapient mammals, are social animals. We're actually the most social mammal, I'm pretty sure (it's either #1 or #2). So it's really no surprise that members of our species would seek external validation. And you're right to call that out for what it is, but where you're rubbing people the wrong way is by using that as a negative. Seeking validation is what we're biologically programmed to do.
And sure, you need a healthy mix of both internal and external validation. Plus there's always the danger that finding your worth in the support from others will fail you one day. But that doesn't entirely remove the value.
It feels like when you're saying people only do something to get attention, that you think they wouldn't do it on their own should nobody notice it. And that's really unfair to say because you can't know that for sure. On something like hair color, it's impossible for people to not notice it, but the wearers of that color can still really enjoy the look of it for themselves.