It's not 'absurd', because he did say "arguably", meaning that there's an argument to be made for either side of the issue (and a poster below makes an argument).
Pointing out that ad-blocking is arguably unethical is fine. If he had said "it's unarguably unethical", then sure, that's absurd, but the poster qualified his statement quite nicely.
> This stance is absurd.
It's not 'absurd', because he did say "arguably", meaning that there's an argument to be made for either side of the issue (and a poster below makes an argument).
Pointing out that ad-blocking is arguably unethical is fine. If he had said "it's unarguably unethical", then sure, that's absurd, but the poster qualified his statement quite nicely.