> Sending you an email after you signed up is "unethical"?

I purchase a product from company X. They require an email and will not let me buy without it. I actually do want an email confirmation that the order went through and even that my product shipped.

I do not want emails about "we released a new thing" or "we have a sale" or "it's Tuesday and we want you to remember we exist". Signing me up without an explicit opt-in using information you required me to provide is absolutely unethical.

"X is even worse" does not make Y ethical, good, or acceptable. What your least favorite corporations do isn't relevant.

Other people are inconsiderate monsters who litter in national parks and abandon mattresses on the side of the road. BP and Exxon did more damage to the environment than I ever could. It's still unethical if I drop my garbage on the ground.