I've never seen or interacted with Fin that I've noticed. Admittedly I've seen a lot less of Intercom over the last 5 years, they used to be on every SaaS site, but it seems there's a ton of competition there now. One of the banks I use uses Intercom for their support but I've never seen an AI bot there, only humans.

I suspect it's very visible for _Intercom_, but not necessarily so for everyone else.