Why do casual players seem entitled to cosmetic items added in game?

[Eyrilona]

This is simply not true. That's like saying non-raiders have no use for learning their rotation properly.

BiS gear helps with clearing content faster on all levels, which is espcially usefull if you are grinding content over and over. Even Fates. Plus it helps to outweight bad optimization and errors in your rotation to some degree. It also helps with survivability when you eat a mechanic.

And of course it's simply nice to have some sort of character progression and getting stronger, this is an RPG after all.

You are technically correct, but in this case that may not be the best kind of correct. The margin of difference just isn't relevant enough in any content that a casual player will be facing - it's like expecting a car designed for the race circuit to speed up your daily commute in city traffic.

But in going in for a 'technically correct', you use a technicality to distract from a fundamentally valid argument about why certain types of reward should or should not be behind certain types of content.

[Supersnow845]

You are technically correct, but in this case that may not be the best kind of correct. The margin of difference just isn't relevant enough in any content that a casual player will be facing - it's like expecting a car designed for the race circuit to speed up your daily commute in city traffic.

But in going in for a 'technically correct', you use a technicality to distract from a fundamentally valid argument about why certain types of reward should or should not be behind certain types of content.

By that logic there is literally nothing besides gear high end content could reward you with that isn’t logically better suited to casual content because the only thing that high end can do to justify itself as more deserving of a reward than casual content is to reward something that makes high end content easier (ie gear). If a reward either benefits neither or benefits both it doesn’t work

Glam weapons, mounts, adventurer plate stuff, titles, none of them can be justified under that logic because there is nothing that intrinsically links them to high end content

[Eyrilona]

By that logic there is literally nothing besides gear high end content could reward you with that isn’t logically better suited to casual content because the only thing that high end can do to justify itself as more deserving of a reward than casual content is to reward something that makes high end content easier (ie gear). If a reward either benefits neither or benefits both it doesn’t work

Glam weapons, mounts, adventurer plate stuff, titles, none of them can be justified under that logic because there is nothing that intrinsically links them to high end content

Have to raise some doubt on that there, because a lot of the things you mention wouldn't be seen as basic character customization options. Nobody ever complained that only people who clear PotD can get "Necromancer" or that you need to clear ultimates for the Legend titles. Owning a certain mount (especially if the mount is e.g. the raid boss or otherwise obviously related to the raid itself!) or not is not as personal as the hairstyle on your character that makes your character look like "your character". Portrait frames.. well, I don't actually know how much people care about those, but again, they're hardly on the level of something that defines the perceived identity of your character in the game for you as much as a hairstyle does? So I get why people draw a line there.