Let me get this straight: One person displaying an interest in two projects using the same language is a red flag for astroturfing? Is it possible that it's so

Let me get this straight: One person displaying an interest in two projects using the same language is a red flag for astroturfing? Is it possible that it's someone who has invested in learning a language and is looking at projects in those languages? If someone posted two repos of projects written in JS would you feel similarly? Two projects in Perl?