Look, this is all very simple. Stop crying about it, there's no need to be so asinine.
NO form of media is a free entitlement to you. If you want to watch a "free" broadcast channel on TV, there will be ads. If you want to listen to a "free" radio station, there will be ads. If you pick up a "free" newspaper or magazine, there will be ads.
This website has expenses. Networks that host websites do not do so for charity. Everyone has a business model. This one just happens to be like so many others that are AD-SUPPORTED.
Then, you were actually given an option, which is to pay a measly amount of money to SKIP the ads. But somehow, you distorted that in your head as "Danny and Peter conspired to create more ads, thus forcing everyone to pay a whopping $25". Which just isn't true. The ad function, such as it is, is set up by the host, which you can see below at the bottom of the web page:
View attachment 335029
Now, is it possible that XenForo shares some of the ad revenue (and/or the ad OPT OUT revenue) with the users of their platform? That would seem reasonable, as a website with a lot of users would be driving more overall ad revenue than a website with fewer users.
At the end of the day, nothing in life is "free". Danny and Peter may publicize CIS as "free", as in there is no annual or monthly subscription fee like there is on the 247 or on3 networks.
But XenForo is not hosting websites "for free". Everything has a price, the question is who pays for it. So either advertisers can pay for YOUR "free website", or else you can pay $25 a year to not fund your "free website" by staring at ads.
The choice is yours. Don't make it out to be something that it is not. If you don't want to pay, that's your decision.