Additionally, using Facebook and Instagram from your browser will constantly expose you to their obnoxious "better in the app!" banners that you can never fully dismiss. Just making another one of their dark patterns visible enough to make you (hopefully) question the intent of the company...
Also, Instagram ads are actually blockable in-browser because they haven't bothered to update the site beyond the bare minimum of compatibility updates in years. So my iPhone on a VPN running a pihole made Instagram a little more bearable until I noticed that none of my friends ever posted anything any more.