There are many chumros that the yeshivish world keeps, and that’s fine. I don’t look at people who keep chumros as fanatics. My issue is when they expect everyone else to keep them. Here are some examples:
Mixed seating at simchos – there is no halachic need for separate seating, yet many yeshivish people expect everyone to do it, and will tell you that there’s something wrong with having mixed seating.
Tznius – many, many chumros were instituted. Knees and elbows covered isn’t enough anymore. Now you need everything down to the toes. Leggings aren’t ok, only tights are.
Chalav Yisrael – it’s a chumrah, yet this gets pushed by so many people. I even know of one person who threw out a Reese’s bar rather than give it to someone who eats chalav stam.
I don’t view yeshivish people as being more frum than me. It’s a different derech, and both are valid. I don’t try and push my derech on others. I’d like the same respect in return.