I'm not sure I would go so far as to say Season 7 is worse than Season 1, but I do find it harder to get through on rewatches.
And I think the reason why is there is a noticeable lack of passion in the final season, like they're just going through the motions and trying to get the season over with as evidenced by how often we get a "long lost relative of a cast member" episode over the course of the season. The last time I did a rewatch, roughly half the episodes had me glancing back and forth on my phone or tablet about halfway through because they can't hold my interest.
By comparison, as poor as Season 1 is, I wasn't usually bored watching it. Because there actually is effort being put in. The writers were just hampered either by Gene's restrictions, over reliance on TOS nostalgia, or just plain incompetence. But I never got the sense they were phoning it in.
I suppose if I were to give an honest comparison, Season 7 has a slight advantage due to a handful of episodes that are far better than anything Season 1 has to offer; Lower Decks, The Pegasus, and of course the finale. But it also has a much larger shade of episodes that just lose my interest after a while.
Does anyone else feel this way?