If you’re selling something called wood, and I use a saw to cut it, I expect it to work because I paid for wood. That’s the implied contract. If the person who sells the wood puts some foreign substance in it to circumvent my saw I should not get in trouble for finding another way to cut it.

I pay for my internet connection and I expect others who make use of the same network to follow its protocols. I expect HTTP to work as HTTP. If a bad network node chooses to circumvent how it works and I find a way around their circumvention then I should not be punished. On the other hand, if I republish and break copyright it is an entirely different matter.