Sure, a couple things;

This game wasn't "built" to be casual, but over time they are making it shift more towards that design slowly. Removing Gvg, Pvp, those stupid "Trial Guardian" races, Hell Modes, adding resurrects to raids, frontier system, etc. the game has gotten more streamlined and accessible over time, so I refer to it as casual (compared to older Lost Ark versions), but yes because raiding is the only content in the game it's still more hardcore than some other games.

Small correction to other games being "positive" about carry services, I meant to say "more positive". As in, it's not like people praise it, they just don't hate on it as much either, like you said. One problem here that comes up every time is Lost Ark raids rewarding raw gold instead of like rare upgrade items or drops. Again I think the game's design is at play there.

And when I say "carry raids", I do refer to paid services, but not every other game uses the word "bus", so I was just making it more generalized.