I'd say the overall difficulty is pretty fair for most of the time. I remember having a hard time on Garuda HM back then with i60 but it actually was fun. I wiped quite a few times on some of the more difficult dungeons during my adventure like Aurum Vale, Stone Vigil etc.

I can see why some people think it's super easy and QQ all day because if you're leaning towards a hardcore gamer side, things appear super easy, especially when you have your static team with you.

That said.. a major part that trivializes the difficulty is that many think all players in this game should watch a guide before entering literally every content.