Only in the sense that it's a buzzword used to inflate crypto-things, really. If you mean "is it a thing that people use, in any significant numbers", then, no, of course not.
Crypto people will, of course, attempt to excuse this with "it's like the Internet in the 90s", but it is important to bear in mind here that (a) hundreds of millions of people used the internet in the 90s and (b) they have been saying this about _Bitcoin_, and other assorted blockchain-y things, for at least a decade, and no-one really uses those for anything as yet.
Crypto people will, of course, attempt to excuse this with "it's like the Internet in the 90s", but it is important to bear in mind here that (a) hundreds of millions of people used the internet in the 90s and (b) they have been saying this about _Bitcoin_, and other assorted blockchain-y things, for at least a decade, and no-one really uses those for anything as yet.
This is, essentially, the latest rebranding.