People play old versions that aren't broken. You can see evidence of this from time to time in various threads, and also outside this site.
I'm sure there are people who currently don't play VP at all but would if MP wasn't completely broken. I sometimes go years between single player games, but would definitely play MP if it was stable.
And finally, even if the fraction of MP players is small, so what?
The fraction of people who play a weak civ like Germany is also probably small. So let's just get rid of Germany, or if a bug with its uniques is discovered let's just ignore it!
"It's was determined that the number of people who play multiplayer are a small percent of the of the total."
Literally no possible way to determine that. What a ridiculous statement.
Yeah I will stop replying to you before this gets out of hand. But please don't make up quotes from me.