No, I didn't mean to state that a pinnacle has been reached. I often don't see the comparisons between Trump and his predecessors as possible to reduce to "better" versus "worse" either, since that usually depends on the individual issue in question.
Is Trump worse for American democracy than most of his predecessors since the '60s (the period I specified in my post)? I think there are significant reasons to say that yes, he definitely is. He has worked to undermine and bring its results into disrepute far more than his predecessors have.
Is Trump worse for civil rights than most of his predecessors since the '60s? I think there are solid arguments for a yes, although I also see merit to counterarguments. My personal opinion leans toward a yes, although it should be noted that Bush, Jr., started the "War on Terror" with its creeping encroachment on civil liberties and Obama continued the task with his administration's widened enabling of surveillance.
Is Trump worse than most of his predecessors since the '60s in terms of foreign policy? My answer is an emphatic no. He came close to starting wars with Iran and North Korea, but it ultimately didn't happen. On the other hand, Bush, Jr., started two wars, Obama continued them and increased the rate of drone strikes inside the borders of other sovereign countries, and many members of both the Democratic and Republican parties supported the Vietnam War and heavy-handed American military actions.
Going by raw numbers, it is simply a fact that the Trump administration didn't kill nearly as many people as the administrations of either Bushes, Obama, Lyndon B. Johnson, or Nixon. Perhaps there are people who won't view this fact as sufficient grounds for regarding them as worse than the Trump administration, but in my view, it is an absolutely central point that sometimes gets overlooked in such comparisons.