I did see a number of unauthorized t-shirts and hoodies online yesterday as well. I’ll add them to my list.
We send the letters to these apps so the snake-oil ones are pulled and the ones that are legit, are more clear that they're not affiliated or endorsed by the tor project, as there's a good chance of harming the users who seek privacy and anonymity.
But why are we sending letters who print Tor tshirts and hoodies? Are we gonna do the same with stickers too? I wonder what's the logic behind that...