wow lacks intense gameplay, a timer gives you that, if you just want to kill bosses mindlessly with the bare minimum of effort go raid. m+ is just fine, by this point the vast majority is in the +10-13 range, the competent casuals work on their ksm, and the ones that actually put in the effort push higher than that.
elitist as it may sound, the timer just proves what good players can do in seconds, takes entire minutes for the casual to figure out, with the timers removal the casual would claim ''oh look we did that as well'' - only it took you 2hours longer Karen.
wow is a competitive mmorpg, for years there has been catering to the casuals cause the reality is they are the majority, they are the money.
leave this little competitive edge alone ffs.
/end rant
also, if you dont enjoy the timer or your cant possibly make the timer. then go lower and practice, but god forbid we put some work in the improvement of our gameplay