Does ISTJ stand for intensely salty typology jerk?
That’s a common misconception! While their quiet focus tends to give many ISTJs an air of intensity, they are frequently known for dry humor, and their very low tolerance for incompetence in others coupled with relatively low feeling can lead to a brusque attitude that can rub people the wrong way, ISTJ stands for Introverted, Sensing, Thinking, and Judging. The FAQ includes an overview of the MBTI naming conventions if you want to know more!
To address the issues with this source: there are many.
The opening paragraph’s links to the author’s own work, like this list itself, provides typing with no explanation. This is always if not a red flag, at least a yellow one; someone who knows what they’re talking about should provide evidence. Without it there’s no reason to believe them. This is a basic concept in avoiding lies, propaganda, conspiracy theories, and any wild speculation: the ‘pics or it didn’t happen’ principle, so to speak.
In addition to the lack of argument providing validity the tritype lists here conflict with both eilamona’s statistical data and the Thought Catalog survey data on cores. A very incomplete list:
Not a single sensing type is associated with type 5 despite it accounting for approximately 48% of ISTPs (in both my sources). That’s right. Almost half of ISTPs are core 5s and they don’t even have it as a fix on the ‘source’ you provided. (Between the two surveys, somewhere between 16-33% of ISTJs are 5 cores as well).
Type 3 is almost unheard of in Ti doms. Yet it’s the heart fix of every single Ti-dom tritype in this list. It’s also in every ESFP tritype despite it being at least tied with 2 or 4 as a heart fix in both of the statistical surveys.
There are 8 listed common tritypes for INFJs. There is 1 tritype for ISFJ. If the statistics on ISFJ/INFJ populations are true, even accounting for error there’s about 5-10 times as many ISFJs as INFJs in the world. It’s also unlikely that the author even knows 8 different INFJs, if this is based on people who they’ve met in real life as the first paragraph indicates.
There’s not a 2-fix to be found among the FPs or really anyone other than the FJs, despite it being pretty common among the FPs (far more common than type 5 in an INFP, that’s for sure).
One could make the case that yes, an MBTI/tritype source exists. However, it is complete garbage. I like to maintain a certain level of quality in my recommendations. You are welcome to recommend this source on your own blog in your own post or when asked and I will make no comment, but if it comes up in the notes of an answer I provided I do want to make it clear that I do not endorse it, and in fact think it’s useless.