Cole Evyx discusses the bland DPS of healers in his latest video on SE disabling sage's dot stacking and also talks about how he agrees with the healer strike on that point:
https://youtu.be/wmnsFgembmI?t=114

It's a big concern of his to convey to players of other classes where the problems with healers' current one-button DPS lie in his video. Regardless of differing opinions I think it's very good that he really emphasises this issue on a broader platform.