I don't think you need much more than a "baseline" of popularity to ensure bugs get fixed, new features get implemented etc.
When things are over-popular, there are plenty of problems with project scope creep etc. You don't always need the most popular things.
I agree. React and Vue are not the only options (just naming them because they seem the most popular), but you do want to make sure you don't pick an abandoned framework (backbone? I don't really know the state of it so I might be wrong here). Although huge communities and clear roadmaps often come with popularity, so I can't say that it also shouldn't be a criteria.
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