Here's an example - you can also find it in liquid spray form, but it is much harder to apply precisely. To answer (well, not answer) your question: I don't know why it doesn't attract dust and dirt particles the way other types of lubricants do. That's a good question, but I think it would require a chemist to answer.
If anyone who installs or services garage doors & openers sees you using WD-40, you will hear a primal scream and they will start telling you about white lithium lubricants.
https://www.amazon.com/Permatex-803...82830&sr=8-2&keywords=white+lithium+lubricant
lol, I can see why it would be harder to get into the bearings. the oil I use just flows into them... the link you sent is more like grease. interesting stuff though.