people even shortened to Insta

Everyone shortens it to insta, Facebook gets shortened to fb or face, youtube to yt or tube. Very few websites don’t get shortened, and those are usually the ones with short names, sometimes even monosyllabic names. Twitch, you can’t shorten that (at least no in any reasonable way), tiktok, and so on.

The rest of your comment stands, I just took umbrage with your implication that Brazil is somehow different in shortening names of apps and platforms. They might do it more often than others, but they’re not unique or special just for doing it.