It’s not a non sequitur. It’s a response to a nonsensical argument ie “regulation makes markets more free” It’s oxymoronic.
There are many good arguments in favor of regulation, but that is not one of them, despite all the mental gymnastics being done to pretend that it’s a good argument.
I’m specifically addressing how the statement which branched this sub thread off was, itself, a non-sequitur to the statement it pretended to rebut.