No, people want to contribute.
Stop making it into a "you all just secretly want to play dps" when that's not what people are asking for. Many people asking for more dps buttons would prefer to have healing requirements drastically increased. Not just a little bit so it warrants using one oGCD more per fight but rather to a level where tank selfheal isn't nearly enough and you'll regularly have to dip into GCD heals to keep them alive.
Will that happen? No. Plain and simple. We're being realistic here. SE has done everything since ARR to go away from that healer model and they outright stated for years that they will not increase the healing requirement nor do anything else that affects fulfilling their primary role and the skill floor.
If higher healing requirements are out of question, as SE made quite clear with their changes and their explicit statements, we have support and dps left to contribute in our downtime. Support, however, has also constantly gotten deleted or replaced by general 2min raid buffs.
Tell me: what are our options? Realistic options, objectively speaking? We can have our pipe dreams but let's be realistic here for a moment.
You don't know the situation at all if you think this is about making every healer into a dps because we all just secretly want to play dps but can't admit it. Preferring a different route for healers is fine, being hostile towards people that aren't even against that is not helpful though.
Many healer mains have asked for years on end for higher healing requriements and repeatedly got shot down in PLL and other official statements. And most of these people have simply given up on asking for it and instead went for a compromise or their 2nd choice which is doubling down on the green dps route if SE stubbornly refuses to give us more to heal.
If it was entirely up to me, I'd have Cycle/ Terminal/ WL2/ CC level heal checks on dungeon bosses. Frequently. With lots of random damage flying around.
But it's not up to me.
Again: people want to contribute and want others in a teamplay-based game to also contribute.
Picking your nose, doing the /beesknees or overhealing isn't contributing and naturally, it's not exactly appreciated if 3 of 4 people constantly push buttons and one person stands there semi-afk and waits for things to happen. If contribution would be possible by healing more, by providing buffs etc. it would be entirely fine but SE took that away so all everyone has left to contribute once the laguahbly low healing requirements are met is currently dps.