Especially the people that “help” and post it all over the internet to showcase what a “good person” they are

I guess it just depends on the intentions of the person. But I value people that help when a opportunity is presented to them instead of seeking it. For some reason people that seek to help others give me the ick lol like what are you trying to prove to others. Also people that go into “serving” for religious purposes tend to get an ego.

I think admire is a strong word. Admire means that it holds extreme value. In my opinion extreme altruism is not something to admire as it means you have no sense of self. Also, we do good deeds because it makes US feel good. So, in some way is extreme altruism kind of self-serving ? I think that's why most philosophy's talk so much about balance and how that is the thing you should be seeking.