Interesting thought. I don't know. Maybe. But as to the suspect designation, there is no law that states when someone can be called a suspect by LE. A person is an"official suspect" when LE say they are.
In the old days they used to be quicker to call people suspects. It now seems protocol not to except in rare circumstances when they are certain they can get no more info from a perp and want to put pressure on them. People clam up when you call them suspects. So they don't call people suspects much anymore.
It's a strategic term.
However, it can have legal ramifications in that when LE speaks to someone they have deemed a suspect, and they haven't given that person a Miranda warning, it can make it more difficult to determine whether they were in custody during an interrogation. And if they can be considered in custody then anything they say without being given a Miranda warning would be inadmissible.
So to summarize, it's probably stupid for LE to officially call suspects "suspects", in most circumstances. They can call a person a suspect whenever they want. I'm not sure why some are upset about this.
I sometimes find the pressers illuminating even when they don't answer much.
I got a lot out of it. They're definitely countering the perception that PF is a cooperative and loving daddy.
I think it was a show of force too. Often they're psychological.