I had a psychology professor who viewed MBTI as context dependent. When asked her type she named three different ones depending on context: work, family, friends, etc. I thought that was an interesting approach. Personality is a dynamic system more like a kaleidoscope than a granite sculpture. There are underlying patterns of thought and behavior, but these can realign differently.
The E/I axis is a great example for this. There is more to it than being an extrovert or an introvert. I know people who can compartmentalize in such a way that they can live without human contact for a month and not be bothered, but in another context lead a discussion with a convincing charisma typically reserved for the extrovert. There are shy people who long to connect, and socially popular charismatic people who have to live alone. Other people are consistent in their degree of socialization.
Each axis can be examined to show that it isn't just a spot on a continuum, but the relationship between thought and feeling, the abstract and concrete, spontaneity and order, etc. can realign creating different preferences in different contexts.