Such a different talk. Before they were designed with the idea that everyone would not have them. However this ring is specifically designed to be used by an either group, gaining power the more you have. With this legendary you will be expected to have one to raid due to it been likely you can get them however due to rng you can get fucked and weeks or even a month behind everyone else.
In the past you were expect to not come with a legendary because they were so rare, now you are expected to have one because everyone else will have one. Not having one makes you a downgrade for the whole group.
Sure the same could be said by old legendaries, people with them are better. But back then they were so rare it was not logical to expect people to have them
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That was fine because you were not expected to have one in order to get into guilds and groups. In a months time you could be RNG screwed and not have the ring, but if a guild or group sees you applying they're likely not going to give a shit about how screwed you got and just decline you. No one declined a rouge because they didn't have glaives of azzinoth they knew expecting that was insanity