First of all, this is exactly what WA strings are. Encoded to 7bit safe compression (see:
https://github.com/WeakAuras/WeakAur...ansmission.lua)
Secondly, you didn't read the whole 2) but instead you made up your own definition. The relevant part of the sentence was "and must be freely accessible to and viewable by the general public."
So quite clearly not "by subs only". The general public.
That is certainly one interpretation of it. It might be the correct one, I don't know.
But that opens very interesting options for other Addon creators.
BossMods could be easily a framework for displaying encounter notifications - that part could be free. But the actual bars and alerts for each raid/dungeon could be sold as a separate package for Patreons only.
Same with mods like Details. The base addon could just be framework that allows displaying combat events. The actual meters for DPS, Healing etc could be sold as separate packages.
Almost every addon could be made into a "framework" and "content" pieces that would allow the authors to charge for them and bypass the policy.
I don't think this was Blizzards intent with the policy, therefore I'm led to believe that even the strings are part of the Addon. The strings are completely useless without the framework of WA. But who knows really. Personally I think Blizzard should make some kind of judgement call, because it's completely unfair towards addon authors who are not allowed to do the same.