Well, to the part quoted from Acacea, in some cases descriptive emotes are necessary simply because they are actually directed towards a GM, not other players - ie you are telling the GM what the character is doing so that they can respond, not just putting it out there for someone else to know OOC but not react to IC. In the emote from Acacea stated, if it was just for benefit of nothing whatsoever, you could type *hums* yeah, but it was for a purpose that the GM expects to know beforehand. Hence...emoting intent, then rolling. Yea, sometimes party members have no clue what you're doing. Happens. I don't mind :P
Edit - and of course telepathy emotes are silly! I mentioned something like that in the sign language app giving credit to Gulnyr for Jennara's creative hand signs in the pre-ear days, without ever resorting to *signs that she just came from a swamp and needs a bath* which you sometimes see. Crazy game of charades, but it was fun. Steel has his funky signs and his writing board too, hehe.
I used to respond to emotes of "*thinks that this isn't a good idea*" with an emote of something like "*thinks she would like a chicken sandwich, wonders why the paladin's shoe is untied, remembers that trinket she stole the other day and is glad no one is telepathic*" until I got accused of being a smart...uh...smartypants. Guilty! I just let it by now
(Price tags...that situation sounds familiar for some reason...)