I agree.
My 11 (almost 12 year old) loves all the “Sephora kid” trends and skincare routines.. she also has gel nails that she does at home during the school holidays (not long ones, just short painted nails with designs that she paints on, and she does her friends too).
She loves those ridiculous photo poses, and has group photos all over her walls where they are all in a group doing similar ones (and wearing the white fox hoodies/Nike Pros/white crocs!).
Some of her friends have taken to wearing false eyelashes and make up in the holidays, my DD hasn’t but that is just her choice and I really won’t be wasting any of time judging her friends of their parents! They are really nice group of young girls, and they are just trying this stuff out.
My DD also surfs, skates, runs cross country, rides a bike everywhere she goes, spends a lot of time looking disheveled in suitable “outdoor clothing”, goes to any activity club going and loves the activities that some posters seem to prefer as they see them as more wholesome (bracelet making, baking, trampoline bouncing, whatever). Her friends do similar activities.
It doesn’t have to be one or the other.
All that group stuff includes chatting and bonding too, when they are sitting chatting and trying out their “nail art” on each other and talking about the latest trends. Older teens and women do it too, it doesn’t make someone “less than” if they enjoy and engage in that stuff.
I would ask you OP, why on earth are you so worked about people who don’t even affect you?