Yes, it's true. The SEC doesn't consider bitcoin a security, but it thinks that of most altcoins, not all though. For instance, they said that ETH is probably a security, but couldn't even begin to set up their case against it. The SEC also claimed that XRP is a security, but lost its first court case... The fact that someone is guilty is one thing, whether you can prove it is another. There are no clear rules here and with all this precedence, the cases are going to drag on for years.
The recent statement of SEC regarding Bitcoin suggests that they have no intention to target Bitcoin, which is undoubtedly good news for Bitcoin enthusiasts. However, you are right that regulatory clarity regarding crypto currencies is still lacking, and numerous cases involving the SEC and crypto currencies may take years to resolve. The rapidly evolving and dynamic nature of technology makes it challenging for SEC to establish a comprehensive legal fame work that effectively addresses all aspects of crypto space.
