https://www.youtube.com/watch?v=gpqfZJuZRNY

It doesn't ALWAYS mean they are Freemason hand gestures.

Hand placement has always had a high-class, hoity toity etiquette system tied to it. It simply stems from centuries of debate and conversation.

You kneel before a king, for instance, so they are sure you can't lunge at them.

You always show your hands to authorities (so they can see you don't have a weapon behind your back).

Poker players train themselves to not show their "tells." These tells are instinctual, but systems have been designed to temper and control them so others can read your body language.

The hand gesture Trump is using here simply shows some degree of anticipation or contemplation.

All this has to mean is that he has taken courses in business communications and body signals.

However, when used outside of conversation it absolutely can send a message...

https://www.sacred-texts.com/mas/morgan/morg16.htm

In summary, hand etiquette came before the secret messages associated with them. Context is key when it comes to interpreting if someone is sending a message.

If you really want to know if a message is being sent, consider the context and expect at least TWO gestures to happen simultaneously.