When sites are specifically proxying their miners, to act as if they're running in a first-party context, that is deceptive, and done specifically to get around adblockers and mining blockers.
Make it 100% opt-in and tell people in no uncertain terms up front what they're signing up for, then maybe.
That is not opt-in, that is a forced choice between two evils.
I do not wish to be forced into an opt-out situation. It is opt-in or nothing.
I will continue to block ads, miners and other malicious scripting. They can offer whichever ad or miner they want, and I will simply refuse and block all of them from appearing on my device in my browser to consume my battery power and my bandwidth.
They are more than welcome to put up a paywall, either single payments or a subscription service, and I will pay for their content if it is appealing to me. They are also welcome to (attempt to) block me for using JS/ad blocking. It will either be completely ineffectual and easily circumvented, or it will make me go to other sites, that don't treat their customers as cash cows.
I have absolutely no obligation to unknowingly fund other people's internet profiteering moonshots. If they want money, they can ask for it honestly and directly. I support several content creators on Patreon, and I regularly donate to various open source projects and the like.
I don't mind paying for stuff, but I do mind when it doesn't happen openly and transparently.
Exactly. No-one is forcing you. You are confusing this with sites starting the miner without consent.