Primals dropped viable weapons back in the 2.X cycle too. The only new method by which to acquire gear added since 3.0 is the diadem, and it's arguably the most boring content in the game. People are complaining because they're tired of the cycle. Every patch we're just doing the same thing with a different set of textures and names. Other MMOs tend to introduce new things that shake up the routine a bit but we rarely see much like that here in FFXIV. That's why people are getting fed up.
The majority of the people that take no issue with the tomestone grind are the ones that haven't been here doing it since 2.0.