@formula1 no, it's not unfortunately, the switch can't run large web apps. it can mostly only run very old websites and things that don't require much "power" to run so to speak, like Gmail for mobile. the browser on switch is extreamly weak and isn't able to run social medias like Instagram since it needs a lot of power to run it. you can use sites like this to message people though, and in theory you can message people's phone numbers through sites like textem.net (I have before) but that site is old and mostly defunct now and when I used it over a year ago and it only worked with a Verizon phone number.
a little side note with textem.net is that since it's old, the security isn't the best and it can be hacked, (someone admitted to hacking my account once) though browse DNS (this site) has had people's profiles be hacked in the past so you have to take into consideration that you could be hacked so I wouldn't make your password super weak like "12345" for example.