I don't think this true, the idea is that it triggers the same-license requirement even for network accessible code. Where normal GPL only triggers that when th

I don't think this true, the idea is that it triggers the same-license requirement even for network accessible code. Where normal GPL only triggers that when the code is distributed, which allowed the SAAS loophole to exist. As for the spreading to other programs part, yes that's the entire point, if you use free code, anything built on it should be free too, to continue giving to the Free/open Eco system.