So, no one has touched on a technical limitation. Bluetooth sucks for going through water. (If you like The Maths http://www1.lsbu.ac.uk/water/microwave_water.html )

Guess what people are mainly made of?

So, if you are standing between a BT transmitter and a BT receiver a lot of magic needs to happen to get the data moving between the two.

People love Airpods. People often put their phones in their pockets. A lot of water in the way.

If you notice BT being particularly terrible, look for how water might be blocking the signal.

This, of course, isn't the cause of all BT problems, but knowing this fundamental really helps troubleshoot when you run into a lot of them.