Do you agree with this Hot Rod magazine online article quote?

Well, I can tell you most very good expensive blocks are sleeved in every cylinder. Has zero to do with head bolt distortion. The better the block, the more HP sleeving it will make, depending on the sleeve.
And then there are coated sleeves, nikasil comes to mind...................so yes, done correctly, sleeves CAN make more HP.

As typical of a comic book, they only have part of th story correct.