I've been playing games for a good long time now on various platforms and i have to say alot of the modern gaming tropes like regenerating health and coverbased shooting is nothing more than one innovation then blatant copying, this has happened before in the past and will happen again in the future, think back if you can to platforming games, when mario and sonic had extreme popularity, there were loads of rip offs like coolspot, RTS games like command & conquer and warcraft had there own bad copy's too. Im gonna go out on a limb here and say All popular games have atleast one cookie cutter copy.
I guess my point is you can go to almost anytime in game development, point at any sucessfull game that pushed the boundries abit and see others that just copied the success, so blaming specific features of games as being somthing to dislike is while entirly reasonably to state that older games didnt suffer from this is just hypocritical, every generation will have good titles and bad titles, saying that older games were better or more innovative is easy when you consider years later the same mechanics are still being used so ofcourse it seems less unique than it did 20 years ago.
I personaly think that alot of modern games are over simplified for the newer generation when compared to the predecessors, but that doesnt make them worse it just makes less daunting initialt as they take less time to get the hang of, or if you look at it another way more streamlined and easier to play, i guess alot of it comes down to console development aswell, few titles these days are pc exclusive but the ones that are tend to keep all the old complexities, most titles though have to deal with controller restraints and hardware limitations becuase they are developed for console aswell.
A good example would be somthing like duke nukem the originals had explorative levels hidden secrets a huge arrary of guns health and ammo pickups and so on. Compared to the more recent DNF it has almost non of those things, blame it on console development and contraints mostly but i guess you can also blame it on lack of creativity.