No, it’s not part of Islamic history, it is part of Islamic theology.
Most Muslims are Sunni, and within Sunni Islam there are 4 schools of jurisprudence. All four of these schools have deemed it acceptable to marry a girl off as soon as she is born, and hand her over to her rapist when she turns 9 years old or bleeds.
While most Muslims are anti pedophilia, the Islamic sources and clerics are not. It is a huge problem where I’m from.
On my phone I switched to Element X because Element would take up to a minute to sync messages. I’m willing to put up with the reduced feature set, as long as actual messages fucking arrive in time!