I mean put it this way, Gruber doesn't say he *doesn't* pay for X in his post, so he could well have titled "X Once Again Marks the Spot" as... "I Pay For X Now, And You Should, Too" because that's essentially what he's recommending.
no seriously, Gruber *must* be paying for X Premium, right? .. assuming he's paying for at least Premium ($30/mo), he's not seeing ads (which most people would be seeing) and is getting a reply boost too (plus a bunch of Grok stuff).