It helps to go back to the source quote to understand the context and what is actually being said: Interview Link
Re: Healing requirements in Asphedelos Savage (P1S-P4S)
"I want to emphasize that we've done the same as we did in every previous expansion here, and that's at the start of every expansion we sort of hold back on the difficulty for the raid in terms of damage taken and damage dealt and that sort of stuff. We make it a little bit easier so that as many people as possible can clear.
You're probably comparing the raid as it is now to what you had in 5.4, but you have to remember that it's 6.0, we added new jobs, and we're still balancing things. We want to get people a chance to clear if they possibly can, and then from this point on we will raise the challenge level in part 2 and part 3 of Pandaemonium.
I think if at that point if you're still unsatisfied, and are thinking healing is too easy and I want to feel more like a proper healer, definitely try the ultimate content."
The comments are addressed specifically to midcore healers who were complaining that the healing checks in Asphedelos Savage were too easy. If you're in the group of players writing off Savage as being 'hardcore' content, you're really not a part of that conversation. The same is true if you got gated by fights like P8S and P10S. There's no point in suggesting that someone attempt to do an Ultimate when they're not even capable of clearing Savage. There's no point looking at niche cases of skilled players doing non-standard clears if you can't do the base content yourself.
No, the core issue is that there are a lot of players that are afraid of making the jump from casual to midcore content because that's when you start to have personal responsibility and wipes. And that's entirely an ego thing that you just have to get over if you want to have a proper challenge.