I think I'm not drained by socialising if it's not many people, the place isn't busy and I can hear the people well and don't have to do a ton of mental gymnastics to understand what they say at all.
To hell with behaviourism and ignoring causes of issues and putting square pegs into round holes.
It does reflect the amount of "multitasking" we are forced to contend with, and in real-time.
Making me highly critical at times of my own ability to multitask. Which can sometimes be pretty effective, provided it does not involve one thing. - Simultaneous communication with another person or persons.