Yeah, I think a guiding principle of contract law is that all secions has to make sense together, and in conjunction with the license allowing promotional material and publishing pdfs I think it can't reasonably be argued that the online sale of pdfs isn't allowed. The quotes in the OP have to be interpreted in line with the other sections of the document.
As for ENWorld, it is as always in legal limbo. Without a clear fan-site policy it isn't clear what is allowed, and even if one is provided it is of course liable to change at Wizard's whim (but then, so is the
GSL). Arguably all of ENWorld is allowed under Fair Use, regardless of Wizards' wishes - arguably.