It seems this blog is an ISTP - The Mechanics.
The independent and problem-solving type. They are especially attuned to the demands of the moment are masters of responding to challenges that arise spontaneously. They generally prefer to think things out for themselves and often avoid inter-personal conflicts.Now I know it's all about the writing and not the author (rumours of the death of the author are greatly exaggerated) but most of the description also applies to the author. Most but not all. The final sentence, "They enjoy adventure and risk such as in driving race cars or working as policemen and firefighters" is a no, no, no when it comes to the life of the author.
The Mechanics enjoy working together with other independent and highly skilled people and often like seek fun and action both in their work and personal life. They enjoy adventure and risk such as in driving race cars or working as policemen and firefighters.
ISTPs are sometimes described as Crafter Artisans,
"introverts, [but] authoritarian in their interactions with others and .. forceful at influencing people. They focus on accomplishing tasks efficiently and skillfully.It seems that DSTPFW is also ISTP.
To master the tool of their interest, ISTPs require a certain degree of seclusion in which to practice. The result is often a virtuosity that other types find difficult to match."
And it seems that Rullsenberg is ESTP - The Doers, also described as Promoter Artisans. ESTPs are "hands-on learners who live in the moment, seeking the best in life, wanting to share it with their friends." Strikes me as like Rullsenberg.