Hahahahah what the hell?
No raid has been done to 90% completion in first day since LK and Emerald Nightmare!
TOS was released June 28th, 6 bosses died day 1
Maiden died day 2
Avatar died July 4th
KJ July 16th!
NH released Jan 25th
5 bosses killed day 1
2 bosses added day 2
Star died 4 days after release
Elisande 6 days after release
Guldan 12 days after release
That is both of these raids having multiple heroic splits AFTER progress begins where as this time that hasn't even happened yet as their is no need. If these raids were as easy they would have all been 90% competition day 1, which they were not were they.
So your facts are pretty wrong and your deluding yourself into thinking that these guys are playing 10x as better than before or they are putting in even "more time" than before which i know is straight up wrong because if you watch any method streamer you would know they all are burnt out as shit. The last week, most of Method went to Dreamhack winter for the weekend and did half the splits that Exorsus did. They only ran 4 groups worth of Mythic TOS splits a week too which started AFTER Blizzcon.