perhaps the heart section is most specific to intp, although it would require only minor adjustments to make it fit for infp. we fail to be ourselves in relationships, to demand our rights for agency. we sacrifice our services with seemingly endless patience to people who can't fully appreciate or utilize them.
the other two sections are a good match for infp too.
maybe to flesh out the difference between Fi and Ti in regards to how it relates to Te.
Fi is afraid of Te and tries to escape it as much as possible, if this is not possible it will try to obey, usually with a big grudge and it will still fail to live up to expectations, accidentally. Ti will disobey Te overtly and has better chances of earning respect for that too, because it's just clashing about the methodology, not about the whole value of business/structure.
problem of purpose comes from abandoning reality in favor of utopian fantasies. once you quit being dedicated to contributing to the world as it is, you begin to feel useless. perhaps Fi is even more likely to end up in this misery.
something i would add is the shadow issues of Fe for intp and Te for infp.
intp are like femnazis, they can become really obsessed with pushing the public moods of archaic violent ethno-centric ideology, having no other subject on their mind but to comment on and attack any instance of outrageous free speech committed by their political enemy. butt hurt atheist zealots, vegan nazis, etc. they suffocate free speech and try to dictate their own brand of thinking about everything. suddenly opening a door is considered to be solid proof of sexism. lets outlaw religion once and for all and why not kill all muslim or replace humanity with A.I. unlike infp they rarely boycott/avoid culture completely, they usually manage to find and join a subculture of like minded zealots and attack culture.
infp are like Vulcans, we can really begin to suffocate all human life and variety in favor of a systematic obedience to what appears to be the foundation of harmony. It becomes like a Te law, except it does not regulate action but regulates emotional expression of desires and dictates dedication. It's like a memory of all the attitudes that once contributed to harmony, but they fail to create the same authentic harmony in the present moment. we suffocate free enthusiasm and try to dictate our own sincerity and concern for our favorite subjects. you can't just play a computer game, you have to solve world hunger/attain enlightenment/understand typology/etc first.