The casual user should not be averse to seeing an ad since they are getting considerable value. The service MUST be paid for. They aren't a charity. If nothing else, they have to pay for their electric bill. The electricity required to answer a moderately complex question (say, one that takes 60 seconds to answer) can cost up to 0.2 cents. That 0.2 cents corresponds to a $2 CPM ad price. Low-cost un-targeted inventory goes as low as $1 CPM.
A point people forget, without ads and commerce, everything of value on the internet would be locked behind paywalls. You can't be a happy non-paying MacRumors user and complain about ads on other sites without being a flaming hypocrite. Ask yourself whether the value you get here is worth seeing a few ads. My guess is you'll probably say it is. Why would you be here otherwise?
BTW, I pay $20/month for ChatGPT. I get my money's worth because I use it to research subjects I'm interested in. It often has to "think" for significant amounts of time, especially when I ask it to browse the web for specific information and synthesize it. I know I'm not the typical casual user. If I were, ads would not bother.