Lots of people here trying to infer motives. Why not just believe what he says? He's a guy who has enough money, wants to do what he loves, and doesn't enjoy controversy. He's hacker enough to want to muck about with how to make a blocker, but it's not his joy. Basically, he's what many of us aspire to be.
I don't want to infer motives because I don't know. I will say that I am among those who doesn't really believe this is simply a morality tale. There are several folks here, like yourself, who are basically saying, "yeah, I can understand the mentality of not wanting to do and ad-blocker because of the moral grey area" I can understand that as well. What I can't understand is the quite sudden change of heart 2 days a…
In the past, being famous usually required a lot of effort and (usually) money. Many people that could have been famous but didn't spend the time/money to make it happen were often discovered by the larger public only after their death. The end game of this property are things like the modern manufactured artist, where fame is achieved because that was the business plan.
An important consequence of this "traditional" type of fame is that someone who wants to leave and get their old life back can generally stop participating. Without the time/money investment the public moves on. "Traditional" fame is a job you can walk away from.
This changed with the internet, where people can become famous by accident. A tweet or blog post can suddenly get millions of views, or something you made can suddenly become the thing that everybody is trying to get a copy of. It's obvious that this is a well-known concept because we have entire industries working to try to make their product "go viral".
This "unexpected" type of fame has a serious problem: it's permanent. It is hard or impossible to simply "walk away' from something when that would mean walking away from your normal life.
When the tsunami of unexpected fame suddenly happens to someone, it is perfectly rational for someone to try to escape the situation before it becomes permanent. The only problem is it may be too late. Also, we're not helping: the fact that this thread on HN even exists is only making this product (and the drama surrounding it) even more famous.
For a better discussion of this problem, I highly recommend watching "This is Phil Fish" ( https://www.youtube.com/watch?v=PmTUW-owa2w ).
edit: I should add a very mild language warning with that video. (a few quoted f-bombs that are understandable in context)