IPFS is a network protocol, and various parts of it have multiple inter-operating implementations. Can you show which part of the protocol has anything remotely close to a blockchain?
If I am serving content via IPFS, or downloading content via IPFS, or writing my own IPFS implementation, where is the point where I end up using this blockchain that is tied together with IPFS?
I didn't say it's directly part of the protocol. But it's part of the ecosystem, made by the same people concurrently.
Go to the Filecoin Wikipedia page. See how it says made by Protocol Labs. Click Protocol Labs, see how it actually takes you to the IPFS page. That's how synonymous the protocol and the company are. So anything made by the IPFS company, designed to operate with the protocol? I think it's reasonable to say it's something IPFS "has". At the very least it's misleading to say "no" without a footnote about Filecoin.