This does not mean that someone is under age, you cannot judge someone on the way they spell or their grammer, what if that person has a disability, and you've just gone out and called them out when they have no control over it.
This is however unlikely I'm saying this so you keep an open-mind in the future due to the fact that I myself suffer from a disability and would not appreciate you calling me a child for the way I spell.
Edit- And before saying someone else is bad, please insure that your own comment is up to standerd aswell.
