I don't think anyone here totally avoids, or dismisses, the practice of typing people by comparing them with other people whose type you (presumably) already identified correctly.
However, some seem to make it the central point of their typing, so that if they know enough people of a certain type, they see that as enough to type others, not bothering much anymore with other typing methods.
Others, by contrast, while using "typing by comparison" to get a first guess, perhaps, they prefer to "check" that typing by trying to analyse each person anew, according to functions, dichotomies, etc.
Where do you stand?