Well no, I don't think the quote is true, but I think I can see where that comes from. If you look at the functions, Fe is the INTP's way of judging the outside world. It's not so much that INTPs care whether or not people like them, it's just that they will typically try to seem agreeable around others so long as they don't have to sacrifice their principles (Ti) to do so.
The thing is though, INTPs are not reliable when it comes to consistently making an effort to 'keep people liking them' -- at least not 'most of the time.' I'd say the INTP approach to dealing with people (Fe) would be better described as 'getting by' than trying to be liked. Which is to say, people will typically see their inferior function as something to survive rather than something to indulge in (most of the time).
This has actually been a source of type doubt for me, because I seem to care more about being liked than an INTP typically would. However, I suspect that may actually be a symptom of underdeveloped Fe. The idea being that I'm so unconfident with Fe that I need to know I'm liked so I won't have to deal with the aftermath of not being liked, which might require even more Fe-energy than ensuring being liked does.
In other words, energy conservation by preventing awkward inferior function situations, even at the expense of indulgence in dominant function. Either that or I'm some other type.