Ignore ignorance, arrogance, and ego.
Some adults what to RP their childhood, perhaps having a restricted one they never got to fully explore.
Others want to RP having children, have Prim babies develop into children stages and automate them with scripting to control the avatar to behave like a child, follow, and animate independently by bot scripts. Which are impressive, and perhaps really bad scripts don't want their glory stolen by far superior systems to their scripts out of a box half baked systems.
Their are plenty of kid friendly and those who are obvious loud shouters against childr