Absolutely! They write:
"The major languages that contribute concurrency errors
from these classes are Go, C#, and Scala and their regression
coefficient is also statistically significant. These results confirm,
in general static languages produce more concurrency errors than
others. Among the dynamic languages, only Erlang is more
prone to concurrency errors. The regression analysis also shows
that projects written in dynamic languages like CoffeeScript,
TypeScript, Ruby, and Php have fewer concurrency errors"
Well, there isn't much concurrency to be had in TypeScript or CoffeeScript since they operate in single threaded environments, and it wouldn't surpise me if the same goes for the other ones. And saying that Erlan has problems with concurrency is... the cart before the horse.