So if you aren’t “terminally on the forums optimising gameplay” you should be grateful for the offered feedback on how to improve as a healer. OP’s stance is basically “since I’m not sandbagging advice is invalid”
If you are using holy but using cure 2 over solace that’s a point a mentor can and should point out. If your response is “well yes but it’s not like I’m a heal bot” that’s not really the mentors fault especially when you have the added circumstances of the fact that like the person you replied to said for an even semi competent tank a healer isn’t even needed. While this was obviously done to reduce healer stress it instead just makes people want them to perform harder because otherwise they are wasting a party slot so to speak