Step back and look at how this issue has evolved over time:
Go back to ARR and HW, getting a healer that did damage was a pleasant surprise and certainly not something you would take for granted. There were plenty of reasons for this of course, Cleric Stance was a newbie trap and people will always care more about wipes than they really should, not to mention resources (both MP, aetherflow and GCDs/oGCDs) were in much shorter supply than they are today.
Fast forward to Stormblood and you started to see a real shift. Cleric Stance in it's original form was gone, WHM finally had MP to spare and all 3 healers had access to solid oGCD heals at this point. This is where the DPSing healer became the norm at all levels of endgame content rather than the exception.
Over the course of Shadowbringers and Endwalker I'd argue that it's actually become quite rare to see true near 0 damage healers. You see healers doing perhaps half of what they could be doing, but they are doing DPS nonetheless, that sort of variance is about the same was what you routinely see with DPS jobs too.
The TLDR here is that this is an issue that has progressively gathered steam and is only ever going to continue to get worse as more and more healers realise that they really don't nearly enough to do once they realise how little healing is actually needed in mainstream content.
A big part of that goes precisely against your claims TBH, can you tell me what a healer is 'juggling' in a typical 24 man boss? The tank is rarely in any sort of risk, AoEs are usually spaced at about 1 a minute. Even if people are throwing themselves into ground markers or off the side of the arena, you can only raise so quickly and so many times. So what exactly are they juggling? Their balls?
https://imgur.com/a/SK80tsiBesides, if they want that style then there's always Sage.
1 of those is Sadge, 1 of those is another healer, can you guess which is which?
Now tell me what Sadge changes that makes it appeal to a DPS hungry healer? If your answer is, 'Interesting DPS', I invite you to expand on what makes it different to any other healer or more involving than AST for that matter.
Every MMO hits a point where it struggles to draw in enough new players to keep the treadmill churning over. FFXIV has gotten extremely lucky both with WoW's implosion and the various lockdowns. But that luck will run out at some point. IMHO given how barren the game has been looking late on in patches over the last year or so, I'd say that time is coming sooner rather than later.No reason to rock the boat just to appease some vets at the cost of the majority. Which we know that is the case considering that the easiest healers are the ones that are played the most.