[gliese1337]

Not according to the article.

All that it claims is that it may impact their social skills. They hypothesize that masks may cause social development delays, and they measure that masks make it harder to judge emotions, but they do not actually tie that hypothesis to their research, and they have no justification that the hypothesized changes to social skills would actually be problematic--which is not at all given, since what counts as "good social skills" is heavily dependent on culture.