Is Uniswap a DEX, for example? I mean, they created the Uniswap protocol, that anyone can pick up and develop on, even if they go away, but their interface, which is the biggest DEX on Ethereum, is a different deal. Same for interfaces of INLEO or LeoDex. Protocols generally can't be censored/controlled in a decentralized ecosystem, but interfaces can.

Regarding whether they should be targeted or not, the SEC didn't care much about that.