Why are there so many posts about shoes fitting?

I understand you can get help about details regarding shank, toe box, positioning, etc. but dear lord. I really hope people aren't using that to buy shoes online?!

Professional fitters exists for a reason... that is the only person anyone should be taking the feedback to if they really think the fit is off. Or get a second opinion from a different professional fitter. Each shoe is different, even from the same brand/model.

Am I the only one mind blown to see these posts every day?? It sure feels like it. Or people are just trying to show off their arches lmao. Come on now

Edit: A lot of people are missing the point (no pun intended). How can anyone on the internet surmise whether people are ready for pointe? It's so dangerous. If not a shoe fitter, even a teacher will have better input.