The only way you can think toolkits are irrelevant is because the other healers in your raid are doing all the jobs in a raid healing team that you can't do on your MW which leaves you to press pretty buttons for the sake of "fun". MW is literally the perfect spec for you because no one expects you to do anything meaningful.
The bottom line is encounters have healing requirements such as heavy tank healing, strong spot healing, good movement healing or raid saving cooldowns etc. MW doesn't bring any of those things to a healing lineup. Instead of people facing this fact we get mongoloids who press EF as people are dying or are critically low and think they're doing some good work getting that 20k EF hot ticking on the target missing 4m health. Then they go to world of logs to look at their overall HPS which comes mostly from EF/RJW padding and pat themselves on the back for sick heals without realizing that the rest of their healing team is carrying the fuck out of them.
But yea I guess you can keep pretending MW's are good and ignore the fact that most of MW healing is piddly bullshit like EF/RJW. Meanwhile hpals,rdruids,discs, hpriests and rshams can press a button to pump 1000%+ sp healing into critical targets or press another button to literally save a raid.