I was a bit alarmed by some of the advice there in the ways to clean a carpet. The main thing to avoid is leaving a lighter patch, so I would not use any solvents at all until water and careful rubbing had been thoroughly tried out. Boiling water on the back of a flannel placed over dried paint is a good method for most paints, though it may have to be repeated a couple of times to really get the paint soft enough.
The person also mentioned acetone, which is a really good solvent, to the extent that it also causes many plastics to liquefy and will damage many carpets. Nylon is an exception.
I would like to know also how do you know if you have removed all of the glycerin as it is colourless? Leaving glycerine in is a very bad idea as it stays sticky for a long time and would pick up dirt very quickly. Also why glycerine in the first place. Rubbing alcohol, in the same chemical family as glycerine, is actually a better solvent than glycerine and it conveniently evaporates.
How I do it for wet paint:
Scrape off all excess with a blade. Get a wet micro fiber towel press once, move your thumb to a new piece of towel press once etc until no more comes off. Then if there is some left, wet the area from a bottle and carry on dabbing always being sure to sue a clean piece of towel with each press. This deals with almost everything and conveniently leaves most of the dirt undisturbed. Only start rubbing as a last resort.
Dry waterbased paint usually comes out with mechanical fracturing breaking or sanding - just passing a blade over the surface, as if filling, starts breaking it into crumbs - this works almost all the time.