Yeah, that's true.
Moving to 1UPT diminished the strategy of it. The importance of building of an economic powerhouse and wisely expressing its might via alliances and good targeting was greatly diminished. It was so easy to dominate the tactical level post 1UPT that the who, when, and how's of fighting became almost irrelevant. Simply fight, and with minimal practice, ye shall conquer.
You can sorta see focus shift with the increased discussion around uniques, unique bonuses, unique religious boosts, stacking national parks, these weird, obscure mechanics that don't really add much in the core arena of civ VS civ combat or plausible economic development. Post 4, that became the de facto direction and selling points because core gameplay wasn't really providing.
5 was a step away. 6 was another step away. Novelty hunting didn't really bite them until 7, though, where they appear to have made so many steps off of the shining city on a hill that they've sorta ended up back down in the dark woods.