"As the Americans learned so painfully in Earth's final century, free flow of information is the only safeguard against tyranny...Beware of he who would deny you access to information, for in his heart he dreams himself your master. Commissioner Pravin Lal, 'U.N. Declaration of Rights' "
If porn was the only thing getting affected, I would gladly support all these surveillance tactics, every single one of them. Porn and prostitution in general is riddled with trafficking, drug addiction and other forms of exploitation.
The reality is that what's at stake here are things that (unlike porn) are not harmful to us, but very important to us. Like the ability to have a free space for thought and information sharing without the oversight of anybody else, not least a potential adversary. This defence is very important against a tyrannical state.
But let's ignore all that and instead make it about children's right to "explore their gender and sexuality" on the internet. This is what I saw some guy arguing a few days ago.
Until we can decouple those things, banning porn has the effect of criminalizing LGBTQ lives.