True, but we do not know how much Admiral Rogers knew. He might have been informed about the whole attempted coup. It would explain Trump’s wiretap tweet.
Yes, I agree that the comment on Admiral Rogers may have missed that important point. No reason to assume Rogers did not get clued into at least a large proportion of what was going on, maybe all of it (he was head of the NSA, after all). No wonder he took the initiative to visit Trump Tower without consulting or informing his “colleagues” in the intel community.
Rogers knew the extent of unmasking requests, saw a pattern, and knew shenanigans circumventing the law were afoot.