Solid Cанёк, I fixed that part using apktool and some smali bytecode magic. Still, lately I find myself opening instagram exceedingly rarely, once a week maybe, just because of how horrendous the UX is even without the ads. It's as if they don't want people to use the thing. A chronological timeline would be a good start, but not something that can be fixed by patching the app.
On the other hand, Instagram before it was bought by zucc was a much much better app. I remember envying iPhone users because it was an iOS exclusive for quite some time.