"You don't like that? Great. Stop visiting that website. That's your prerogative. But to visit the website, use their resources, AND block their way of generating revenue to pay for that...well, that's both immoral and wrong."

That's a summary opinion without the backing of law or even a thorough examination of the ethics involved. What is unethical/annoying to you may not be to someone else.

The poster is free to use AdBlock and other scripts to improve his browsing experience and the NYT is free to install ways to get around ADB (of which many exist) or make content available to those who want it for free.