I noticed that a lot of people seem to be missing that fights in this game are generally very minimal in RNG, the bosses mostly follow a timeline and you won't get any surprises.

That being said, if someone decides to make a cooldown usage spreadsheet for a no healer clear of content, most of the people who can clear savage would be able to use that spreadsheet to do it without healers.

It's not an elite player thing, you just need players that are above average, capable of doing mechanics and able to follow a cooldown spreadsheet.

Also, regarding all the people who say "It's just a challenge run!", we did have challenge runs pre-ShB where the game was better balanced, we had soloheal runs. No healer runs on current content means the game is balanced badly, there's no excuses for it.