The moral outrage crowd in the US have no power. The people who can and will act against you will only use morality as an excuse, not a cause. Being some nobody, the government has no interest in you anyway. You can watch porn, they can know it, and nothing changes, because you're still a nobody.

(If you watch porn online, you can be pretty sure they already "know" it, because you're not doing it in the privacy of your own home, you're doing it on a public network with next to no secrecy about who you are or what you're doing).