How many previous Presidents has Q served? I think they have been around since John F. Kennedy. They chose Trump for a reason and waited until the 2016 election with Hillary.
Q will forever remain an online mystery to billions, they do not owe us any explanation. Think how much light they have shone on the world for us to see information [they] did not want us to know, we would still be in the dark ages of information if Q had never posted.