Most swaps are unprotected. We've really gotta stop using that modifier. It's just like how most second-round picks that are traded are unprotected but no one feels the need to say, "And the Spurs got a completely unprotected second-round pick from LAL as part of the deal".
Yes, that swap is unprotected, but it's a lower priority than Washington. So WSH gets the best pick of them and PHX, ORL gets the best of their pick and the worse of WSH/PHX, and PHX gets the worst of all three. For some reason, folks on RGM were saying Washington can't trade another swap for those years, but that doesn't seem true. We'll just see if anyone is willing to buy it at this point.