Why wouldn't they try and push this events? People still pay for them, and that is the problem.

Also why do you think they made the rule that you cant discuss drop rates from pulls and what is happening in other versions of the game? Misinformation, because if people aren't aware of what is going on they will be more likelly to keep spending.
The difference is that in this day and age we still have access to the information even if they try to omit it.

The only thing that will fix the problem is if players stop spending on events that have crappy rewards.
As soon as we, the players, stop spending they will change or kill the game, because there will be no money being made.

As I said countless times in this forum we speak with our wallets. We the players have the power to make it better for ourselves if we spend with care and wait for stuff to have a price we think its worth paying instead of giving in and pay what ever they ask.

Decide how much you are willing to pay for items, ninjas, etc. and never go above that amount.

Thing will start changing, it may take up to 3 months or more, but if we all do this, it will

but how much did you spend on the wheel to get the 50%, maybe if you do the math it ended up at the same price as without it, unless you got really lucky