A PLL is one way to solve the problem. It's not the only possible method.

Motivation is the text used to describe why you think the OP should use a PLL and divider instead of going another route. What advantage you see with a PLL compared to other alternatives.

Remember that you wrote "Use PLL [...]".

There is a big difference between "You could use a PLL [...]" and "Use PLL [...]".

When someone do recommend a specific solution, it is common practice to also tell why that solution is recommended. What motives that made you recommend a PLL solution for this specific problem.

Read for example the third post in this thread, by Kai Klaas. He does specifically post reasons (motives) for considering a PLL. It's only the addition of motives that can give the required feedback to let someone make a good decision. Why should I buy the more expensive shoes? Are they more comfortable? Breathing better? Water-resistant? Just cooler? All decision making should be masted on motives and reasons.

Note that a specific solution may be very good for one user, when solving a specific problem. But that does not mean that the same specific solution is a good one when solving a different problem. So "I have used" isn't really a motive. "I have personal experience with" might be part of a motive, if it can be shown that that experience is applicable.

In the end, Internet is a land of anonymity. Whenever someone posts something, the readers have to make decisions based on what is written, because we don't know that person. And that makes it even more important that people who suggests things on the net backs their suggestions with motivations so other readers get enough information to properly weight the recommendation - or know what information to look for to try to validate the applicability of the motives.