After watching the video no I don't really actually think it is that hard, people just don't realize how easy it actually is and don't bother trying to go off meta. I feel like I can list 100 reasons why but I will keep it kinda concise why I think this is true:
-They had minimal clemency casts and the casts they did do were during downtime anyways where it cost them absolutely 0 dps. The bar for healing is so low that it's possible to hardly even need direct healing from gcds. Without a healer.
-It was week 2, and they weren't fully geared. More room for error in the coming weeks will only make this easier to pull off.
-The only actual "cheese" or workaround they really had to figure out was the cover strat to bypass having to use tank LB3, but this isn't actually even hard to pull off anyways. I mean you're just throwing cover on a pre-assigned person as an alternative. Everything else in the fight is literally playing out the same as it normally would.
-They spreadsheeted mit. That's it. Tons of people do this, and expect it, on a regular basis in savage and ultimate anyways. All a healerless run does at best is somewhat amplify the strictness of mit usage. Spreadsheet it. Problem solved.
So please enlighten me on why this is so hard to actually pull off, because nothing stands out as extremely difficult. What is the crazy stunt they pulled that makes this seem egregiously harder than just... A regular clear of m4s in a coordinated group environment, with moderately stricter mit checks and having to press cover once instead of lb3 once?
I think if more people actually tried a healerless run in the first place it would be quite apparent how many of them are actually more than capable of doing it very easily. I guess my biggest question though is why you think it's okay for it to even be possible to clear fresh high-end content while undergeared, without a healer present. Should it even be possible to clear high-end content without an entire ROLE present? Like seriously? It's not alarming that a role is so useless that, even in the difficult content, they fail to justify a NECESSITY for it in any way?