They are good. Can you name a better game in the same genre? The only competition I can think of is Uncharted 4. The older Tomb Raider games are too many generations behind to run on modern consoles.
Tomb Raider has become a major movie franchise, so it's not too surprising that the new games from the last decade are essentially movies.
The newer TR games are actually pretty great. Not perfect but it's unfair to label them as generic. The only other games I know that are similar are the Uncharted series.
It is very common to use "generic Ubisoft open world game" to refer to any game regardless of developer that follows Ubisoft's open word formula of having an open world with ton of pointless random collectables, lots of icons in the world map for them, the world being separated in areas/regions you "conquer", kitchensink gameplay where everythings is thrown together with shooting, hunting, crafting, skill trees, quest markers/GPS, etc.
If that describes "most AAA games nowadays" that is because it does :-P. Ubisoft games were successful after all.
As an example this was the first hit when i searched for "generic ubisoft open game":
