Isn’t the simplest read on that statement “there should be legislation that means nobody has this power”? Basically, something like “if it’s legal I’ll do it, but I don’t think it should be legal”.

This is kind of dubious as a basic ethical position (if you think it’s bad just don’t do it) but note that it’s not entirely ridiculous as if it’s legal, others can and will pressure you to do it. Whereas if you cede the right to do a thing, you can’t be coerced by an angry mob to do it.