I have a quite simple policy regarding commenting:
Am I (hopefully) generating more value for me and (!) the ones I am engaging with?
If yes, go for it - if not, walk away.
I'm reading a lot of different articles about a variety of topics, but I'm only commenting on a few selected ones, because I think, no serious author likes the usual "good post" spam and I'm simply not able to contribute something meaningful all the time - that's when I silently walk away :)
I think, that's not the worst way of handling it.
There is no problem in this and I would prefer this to good post, sir! There are regulars here who occasionally drop a word or two when they are in a rush, but they are regulars.