I'm not a fan of these 'he said, she said' sort of articles, especially when they concern 'dumb internet opinions'. Do people say they are dumb or have some just earned the 'dudebro' labels because of how accessible they are? Does this actually have an impact on anything? Just seems more relevant to focus on the positive points rather than going after other games you may perceive people put on a pedestal.
Anyway, I think 'cleverness' can work two ways. For high quality shooters the intelligence in design goes into making things well-paced and varied while getting the player thinking about their weapon choices and environment without overloading them. Gears of War, for example, was always intended to be more overtly tactical than most whilst retaining a certain immediacy, and it succeeds. The cleverness isn't always as obvious because sometimes it's a matter of 'if you go through this way to the side, you can flank them' over more advanced environmental thinking (which the series has always built on). A lot of the intelligence is in the smooth design.
The other sort of cleverness stems from the design but will also get the player thinking on many levels and allow more flexibility. Obviously, a lot of the more successful RPG (and RPG hybrids) tend to tone down these elements but I'm sure there are examples of RPGs and RTSs that tax a player more than something like Gears of War. Strategies like chess gambits aren't really feasible in shooters if there is just one player (might work as a multi-player strategy in certain circumstances, I'm not sure). Throw in the multitude of options, provided they're well-balanced, an RPG or RTS can incorporate adds a whole depth that shooters rarely touch (class systems scratch the surface) and allow players to really experiment. Obviously, as a result of requiring more investment to learn, they might not appeal to everyone like shooters do. Neither is at fault.
Anyway, both of these alternatives are good, and neither are better than the other. I just think it's notable that a lot of the more successful games have a lot of 'behind the scenes' intelligence, and that's encouraging.
I hope that makes some sort of sense. I'm tired as hell and going to sleep now.