Where are these dreaded "beauty filters" in Instagram app? I don't remember any from back in the day when I still used it. Just checked again and it seems there are still bunch of typical "hipster colors" old-school Instagram filters, then some basic editing options.
You are missing 90% of the app. These are LIVE filters they are talking about. Not a post-processing photo effect.
Don't select a photo from your phone - that brings up the boring old-school photo editor mode.
You want to start a new post by clicking the "+" at the bottom and then swipe to the left or click on "Story" or "Live".
This gives you the advanced AI filters with live preview. They are created and distributed by third parties through a gallery/store like interface.
These are the type that say add dog ears to your head. Or detect when your mouth is open and makes a scary effect. Or can give you perfect skin and AI-upgrade you or turn you into an anime character.
These are what people are talking about. Not some laughable "color filter"