When it comes to dungeons in general, the basic etiquette should be to at least have your gear 2-3 levels close to the min of X dungeon, but don't be a dick and apply non main stat gear to your gear to inflate your stats because then you are actually just making things worse for yourself.

I can stand people not knowing mechanics, but I can't stand it when people put on the wrong piece of accessory just so they can get high enough for content, cause the reality is they aren't high enough for the content since IL Is nothing more than a number that says you should be meeting a certain main stat treshold. But you don't hit that treshold when your accessories are a mix of VIT, STR, DEX and MND.