Yes, it is, but unless it was Trump who ordered the concealment, it's evidence that his aides were conscious of his guilt. I think that Trump has limited consciousness of his own guilt (this is the guy who thought the explosive "transcript" would be exculpatory), so it's plausible that Trump might not have ordered the concealment because he didn't really comprehend the problem.
That is the damming part to those saying the transcript showed nothing wrong. Even those closest to the president saw how wrong it was and tried to hide it.
But you make a bothersome point, it is unlikely Trump ordered a cover-up because he is incapable of believing he did anything wrong. I do not think a cover-up is going to reach him.