And many non raiders or those who call themselves raiders but are incapable of taking on more than one mechanic simultaneously like to tell themselves that even down to the LF"R" level. When the simple fact is that if you have not beaten the boss on it's most challenging difficulty, you have not beaten the boss period.
If you have cleared LR"R" and it's cardboard cut out bosses you are done with the content by your standard.
If you have cleared Flex with it's pop up moving dummies painted like bosses you are clearly wasting your time by your standard.
If you have cleared the Normal version of the boss you must be some kind of super hero for exceeding the prior two mock up raids.
And finally if you meet the challenge of beating bosses that are the true challenge of the game you must be insane cuz dats tew hawd.