Dreadknight Garen on Sale?

lol jk

Correcting your grammatical error was just to make you mad. Mission accomplished. However, you just dug yourself into a further hole by saying that it in fact was correct.

Let's look at the facts.

"Then" is used to define something in the chronological sense, i.e. "I want to go to the store, THEN go home" See? Used to show something on a timeline.

"Than" however, is used to show one thing over another, i.e. "I would rather have nachos THAN a hotdog" Used to show one thing over another.

In your sentence, you were using the implied verb phrase derived from my original post, "If these kids are too young to have a Twitter"

And you are right, anyone who went through a high school English course would know how to follow it up. I guess you must still be in junior high.

To follow up said verb phrase, you used "than". Let's look at how that turns out.

"If these kids are too young to have a Twitter, than they're too young to be playing League".

In that sentence, there isn't one thing over another being chosen by "than". Now let's look at the correct way.

"If these kids are too young to have a Twitter, then they're too young to be playing League".

See that right there? It is a conditional statement. What else is that known as? Oh, that's right. An "If, Then" statement. "IF, THEN"

What was that you said about being a fucktard?