Has this been proof-read? There's a grammatical error in the second sentence on the first page.

> we found [...] a strictly connection between gender diversity and communication patterns

Obviously this doesn't necessarily reflect the quality of the research but it is jarring to the reader and makes one question what else about the paper has not been checked over before publication

I'm not sure. I found it by Googling. I think, given there are several authors listed that, yes, it has been proof-read.

Generally I wouldn't consider the occasional typo to be indicative of the quality of the underlying research. Zooming in on a minor detail in an attempt to paint the paper negatively seems needlessly pedantic, but that's just my opinion.

I wasn't attempting to paint anything. Quality issues are extra-egregious when they're visible on the first page, but that's just my opinion.

Possibly, but being charitable, this is a preprint written by someone how specializes in software engineering, and it is written in their second language. A typo seems like a fair mistake in these circumstances.