I think some people wanted "dronies" to be this, but personally I find the counter insult thing a bit weak.
Any kind of "no u" clapback isn't productive.
Rather it's better to point out that tankies are absolutely vindicated by history because we've seen what counterrevolutions look like in Indonesia, Chile, and Korea.
If they squirm around with "actually tankie means that you support AUTHORITARIAN states like RUZZIA", it just gives you more opportunities to dunk on them for lying about what MLs actually believe, and for implicitly supporting NATO by pointing at what every single place NATO has defensively bombed looked like before and after.
Of course, always remember the person calling you a tankie doesn't actually care about the content of your arguments. You're not trying to change that person's view, you're trying to show everyone else how bloodthirsty and ignorant they are.
Nice point
Some people on Lemmygrad have started using "dronies" which is pretty funny.
What is the origin of it? :)
https://www.urbandictionary.com/define.php?term=Dronie
The term comes from a joke about people defending Obama's strikes on civilians with the use of drones.
... but they are the original tankies 
Cappies don't exactly work... like they said, drones seem to catch a rhythm...
Why tankies?
It's a reference to the Soviet tanks rolling into Hungary, and later Czechoslovakia, and the Western lefties (originally, the CPGB) who did not get disillusioned by the authoritarianism of the USSR at that time.
In 1956 the USSR rolled tanks into Hungary to stop a fascist counter revolution. Communists who correctly supported this action were labeled tankies.
Rules TBD.