[Planktonne]

That's the point; there's not much practical difference anymore between a comment posted on a site I don't own and content posted on one I do. In both cases, it will be mined by corporations who want to capture all possible traffic.

[appreciatorBus]

Yes, you are correctly articulating the downside of posting both on platforms and on your own website . I just think you are neglecting the other side of the ledger - the benefits or upside of each.