I think perhaps INTJs may think that because with them you always know where you stand with them. They don't like telling untruths to avoid hurting people's feelings- whereas people who are Fe dominant, may hide their true intentions out of fear of hurting people, hence why INTJs may think INFJs are manipulative.
I'm not sure this is always the case though. To be honest, I think anyone can be manipulative and have bad intentions if they have a strong enough motive. Most INTJs though are motivated by knowledge, so they can come off as a**holes, but you can always count on them to be there during the hard times, and in the end, that is what counts.
I'm not sure this is always the case though. To be honest, I think anyone can be manipulative and have bad intentions if they have a strong enough motive. Most INTJs though are motivated by knowledge, so they can come off as a**holes, but you can always count on them to be there during the hard times, and in the end, that is what counts.