scp uses sftp protocol by default since v8.8. You'll need to pass `-O` parameter to explicitly use the legacy scp protocol if you still need it for backward compatibility reason.

As an scp user, this article was not a great advertisement for sftp. It listed a whole host of problems that don't apply to me, then finished with:

"[sftp] disadvantage is a much less friendly user experience, especially in cases where one simply wants to type a command and see files move."

I just want to copy a file. I'll keep using scp.

I had that thought too, but rsync should mostly replace it. I have run into situations where rsync isn't available so scp -r has been helpful though.

IIRC, wasn't scp going to be rewritten in terms of SFTP behind the scenes?

The scp command uses the SFTP protocol since OpenSSH 9.

Didn't know that! Thank you, will update the post.