Whichever devs implemented the Instagram behaviour ought to have their computer taken off them.

100% the worst experience. “Oh you don’t have the app? No big deal, let’s (maybe) play the video anyway but remove the audio, obscure half the screen, and make any interaction redirect and then bounce to the App Store. Why won’t you download our app already????”

They have to be pushy, it's how they install spyware which use tracking methods that would be a CFAA violation and prison time for anyone else: https://localmess.github.io/