The start of the agreement says it defines "the terms that govern your participation as a registered Apple developer." This "participation" presumably includes downloads of the OP software, since this software is presently firewalled off for registered developers only.
There is no reference anywhere to being restricted to iOS or iPhone/iPad, including in the paid content section.
But if you're a lawyer (?) and certain of this point, I'd be relieved to take your advice, as I've purposely avoided registering as an Apple dev :)
Here is the agreement (PDF) https://developer.apple.com/programs/terms/registered_apple_...
(Updates: Link to agreement, quote from agreement.)