Many of those are among my favorite episodes of classic Trek (I'd also include In the Pale Moonlight on that list, and Far Beyond the Stars).
One of the biggest issues I've had with modern Trek overall is it's kind of allergic to heavy theming. I feel like one of the most consistent elements of Trek through both the TOS and Berman Trek era is the show essentially clubs you over the head with allegory and/or message - there's no real question what a given episode is "about." However, I often finish episodes of Kurtzman Trek and think - what was it about? Obviously depending upon the level of serialization, this can be harder to pull off, but the episodes often feel like a muddle of subplots and character arcs where nothing much stands out at the end, even if it's well done in the moment.
I also think this is one reason why some people thought The Orville "felt more like Trek" - because it was heavily written in the allegorical, almost didactic style that Trek now seems allergic to.
