Usually the note "reserve" has been applied to some bounty like translation or even signature campaign. But posting reserve in such discussion isnt appropriate.
Regards to this OP, the case might be like that since he is wearing signature. What if someone do that and he doesnt have any signature and likely to composed well his thought (more like rehearsing or proof reading first his post) first. Would that can also consider as spam or something negative in lie with forum rules?
Good thing about forum now is edited mode can be seen. But archiving is necessary in order to caught this new tricks. Early bird catches the worm.
On the contrary, if you are not wearing any signature then you have all the time to compose a quality reply and says your thoughts that time and then go back edit it. Or if you have signature then you can write quality post as well, and then go back later to edit if some additional thoughts you want to add to the discussions. I've seen many members doing this.
That member has nothing to proof read, LOL, I would understand if he says "I will put my thoughts later", but he didn't, he just says reserve. You also have to look at the time stamp, 11:35 PM, obviously I look at it as he is trying to make the number of post on his bounty for that day or week.
@TECSHARE - I don't know if there could be some daily editing restrictions or if Theymos would approved of that. But let's see.