Then everyone would opt-out and it would make it useless. Even youtube is cutting the ad revenue to some channels because everyone is using ad blocker or opting out.
So I think the ad should be there by default, you can perhaps select what type of ad you want, like the topic of it, but not opt-out.
I mean blog authors could opt in or out, not visitors. Like, you can turn ads on or off for your personal posts, and everyone would see them or not see them.
Ok but that is what I said earlier that then whales would discriminate some posts that have too much ads on them and intentionally not vote on them.
So some people who are already earning a lot through votes and choose to put ads too, might be looked upon by whales as something negative, and they would start voting less on them.
So they would think like:
So its better if the ads are there by default,so that the votes wont be discriminate by this criteria.
It's the same thing with 100% Steem power posts.
I have observed that people who put 100% Power Up posts earn more than those that chose to get 50-50%.