INFJ here and count me out on the vote.
I've read some bad reviews of this crowd-source design site. I think designers should be paid their worth and these site make it a contest. Imagine if you had to compete with 17 other workers to get paid. That would be awful.
Also, I prefer not to be part of your unpaid market research group. This isn't how market research should be done.
No, I have always thought that bullet journalling looks too complicated. I buy an attractive planner, currently using this one, and just fill it out day by day. If something is pretty, I tend to use it more. :)