Your attempt at suggesting those I posted are "
random minority opinions", right after posting the most random and outsider opinion on the subject I've ever read and when all you had to do is use Google to see this has been the general consensus since 2018 and these are just a bunch of the very first results, is honestly pretty damn sad.
Type "Sigrun hardest boss ever" and enjoy your read.. just don't be triggered by the the third link
GMGoW Sigrun (God of War) is harder than any Souls Boss on the Dark Souls Remastered Forum on GameFAQs.
All I got from this interaction is that you've never been even near a GoW game at their max difficulty, are probably a Give me a Story kind of player, and therefore have no idea whatsoever of what's being discussed.
She's way harder than any other enemy in the game to me, made me purchase and use the very first resurrection stone in the entire playthrough. Not as hard (long) as Sigrún at GMGOW maybe, but she's got some very nasty moves and constantly changes from the parry version of a certain attack to a killer version of that same attack to fuck with you.
SlimySnake
found some pretty good and effective strategies against her however.