Seems like a lot of work to stop users who will probably simply not view the site anyways. It would be interesting to know if having these anti-adblocker techniques makes people turn off their adblockers to use the site.
It would be interesting, it could probably be done with browser fingerprinting. I would wager that some of the larger companies have done this.
Personally, it's a question of what the content is. If it's a summary of objective facts, I'm not disabling my blocker. I can probably find the same facts elsewhere that doesn't require me to disable my blocker. If it's an intriguing analysis by someone respected, it's higher value content to me and I likely won't be able to find the same content elsewhere unless it's been stolen.
Personally, I just abandon the site. I'll have a quick look to see if the page I'm interested in is in archive.is or can be archived, if it is/can all good, if not then no big deal.
Personally, it's a question of what the content is. If it's a summary of objective facts, I'm not disabling my blocker. I can probably find the same facts elsewhere that doesn't require me to disable my blocker. If it's an intriguing analysis by someone respected, it's higher value content to me and I likely won't be able to find the same content elsewhere unless it's been stolen.