You're confusing pay-to-waifu with pay-to-win.
Even then, ignoring the guaranteed rainbow deals, whaling with FGs wouldn't even guarantee that you'd get a rainbow, much less the waifu you wanted.
When Nutaku actually hands out deals and freebies that benefit all players, not just paying ones, and you still complain, then yeah, obviously there's a sense of misplaced entitlement here.
Bitching about this ticket is basically like saying you'd never want this freebie to happen again, never mind the tons of free players who just got their first rainbow today without having to deal with the usual bullshit 0.5% rates.