Its higher chance than other counties in my experience
But the idea of blocking any country for a supposed accusation having no proof is laughable.And also you know what 2 italians did to me?I was playing a game long long back(I was close to 1000 then I blundered the queen.He wrote me "You should resign in a completely hopeless position.Continuing to play when you have no chance of winning is bad manners."I didnt even say anything to him nor was I stalling the game still... Another Italian guy rated 860 approx. was in a winning position back when I was a 1000(now 1240).When the mate was coming he wrote me in chat "Loser".Once again I didnt even say anything or stall the game. I just reported both of them and moved on. I never made a forum called "How to block all Italians so that I dont get matched against them?"
Must admit I find Indian players really enjoyable to play against and have nothing but respect for them I think they bring a lot to the site and communities here on chess. Com, every country has people who stall etc