You need to make your mind up, in one statement you say you don't think its true healers spend most duties doing 2,1,1,1,1,1,1 yet in your post immediately before you state p2 of e12s require's little healing
As for whether it is true or not, yes its true healers spend way too much time not needing to heal. The healer forums have being saying this as far back as shadowbringers launch.
e4s was cleared without a healer damage is so low. Yes gear creep makes less healing required. It doesn't change the fact that healers still had ample time to dps during prog.
Reminder yoshida said in famitsu interview that came out recently that they tried to tune healing as tight as possible for this tier. What this tier shows is that Squareenix CAN design fights that demand healing and people enjoy it
Except gear creep neutralises that swiftly and it also begs the question, what about EVERY OTHER DUTY IN THE GAME than this savage tier?
There's a total of 40 savage fights in the game and 3 ultimates outside of delubrum which data is still being collected on. There's a total of 7 that require intense healing at their tier. E12, E11, O8s, O4s, A12s, A4s, A3s
We all know some of these savage modes are a walk in the park. If we were generous and said 43 duties required intense healing at minimum ilvl, that's still less than half the number of dungeons alone. So already thats 86+ duties where healers are going 2,1,1,1,1 etc
Its not enough for just savage to heal more, when there's so many duties that don't require much healing and that's not even taking into account msq. hoary and coultenet in 2.1, Raubahn in 3.2, zenos in 4.0, ranjiit in 5.0. All of these long fights at level and you spend it going 2,1,1,1,1,1,1,1
also tip: edit your post you can bypass the text limit