You can cancel a subscription. That's how subscriptions work. That means that any future changes is not a concern for current offerings.

And I can't understand why hackers never acknowledge this.

I can put gas in the tank of my car. In the future, they might lower the quality of the gas - or even make it more expensive! That doesn't change anything about the gas that I will currently put in my car.

> you have disposable income to spend on this sort of stuff

Advertisers already know that a hundred percent of the population have $20 in disposable monthly income, because they can pay with credit. So they don't learn anything new.