You found a post and you felt it was worth meriting. What's the big deal? I think some overthink merits and who should or shouldn't be eligible. It's not like you know 100% if the person is part of a farm, or a scammer, or many other things. You read a post and felt it deserved to be acknowledged. Tell whomever to back off, if theymos has an issue he will remove you.
That's why I wanted to share the case here, because I'm sure theymos will see it. As far as I know he doesn't care much about anything but selling merit, in general. Maybe for merit sources he is a bit more vigilant but I am sure he gives freedom to distribute merits as we see fit.