When it comes to Champion ages, why do you not have a "Ages are different in Runeterra" note?

Riot is not going to give specific Champion ages because no matter what, someone will disagree if they claim Lux is in her early 20's (when she barely looks 18).

To remedy this, I think Riot should come out and say that Runeterra ages are not the same as ages in real life. For instance, Lux could be in her 30's, but looks like a teenager, and that'd be the norm for all Runeterra humans. An old man in Runeterra could be somewhere around 200-300 years old, etc.

Good idea or bad idea?