I suspect Instagram or Facebook gets them 10x the eyeballs of having a website, at 1/20th the effort, zero cost, and nearly zero skill or expertise at anything tech-related.
I suspect both can be true at the same time. In the case of Instagram it still seems silly to miss out on potential customers by only posting on a non-public platform though.
Facebook definitely makes more sense to me. It only stops me if I try to go browse back through all their photos or something. I can look at posts and any of their… I dunno how Facebook works, but featured or whatever images, for menus or current sales or what have you, no problem. Insta stops me if I try to scroll past the first screenfull of content, and doesn’t have as much info available outside of posts (most of which I can’t see)
I have avoided a place with only insta, simply because i couldn’t see anything I needed to.