The fomo promise was more about not removing seasonal stuff every 3 months, which they've done. Not about solo players having solo access to raid weapons.
This is sort of your fault. Why buy a game that has a 6+ year history of needing teams to beat most of the endgame content? If you were waiting for them to fix it, wait for a review saying it's fixed? Why buy it when it's not fixed and then complain? Seems like a waste of money....