It's as much of a "game-changer" (or not) as bit.ly: a crucial workaround of artificial limitations on closed platforms.
I get it. I'm just laughing at the description. It sounds as if it could have been written in 1991.
you can only put a single link in your insta account so its a quick and simple way to link to multiple pages from your insta without building a webpage for it. It's used a lot, so in that sense it's a game changer