> Introverted: INFJs are energized by time alone
Matching a "wildcard"? Rather no.
To have many hats you need to be flexible and open with people. Otherwise this won't work out.
Introverts don't like "jumping ship". The "wildcard" on the other hand is good at exactly this, and likes it actually.
> iNtuitive: INFJs focus on ideas and concepts rather than facts and details
Matching a "wildcard"? Quite a strong no.
To "get shit done" you need to focus on the practical side of things, facts and details, not the concepts behind them. Also you need a strong "good enough" attitude, something which someone who is concerned with the big picture and the abstract / theoretical ideas behind that is usually not good at. Philosophizing about shit doesn't get shit done.
> Feeling: INFJs make decisions based on feelings and values
Matching a "wildcard"? Also quite strong no.
To get shit done, and be at the same time good in many practical things, you need "thinking" rather than "feeling".
Values and feelings (especially of others!) don't mater much when you need to execute an urgent task quickly. It's more like "shot first, ask questions later". Someone who is concerned about the feelings of others would have a hard time to do that.
> Judging: INFJs prefer to be planned and organized rather than spontaneous and flexible
Matching a "wildcard"? Also quite sure not.
The described "wildcard" likes to jump in head first. That's the opposite of "planed and organized".
The article even mentions explicitly that "wildcards" are not well organized usually without the help of others.
See further:
https://www.truity.com/personality-type/INFJ
(And compare there with the previously proposed personality types.)