Honestly, for the past 2 seasons, people turning off or doing other more enticing things is not the mark of a casual fan.
It was simply flat out bad basketball, and brought no joy watching. The losing wasn't even the biggest issue, it was just so putrid to watch, that you shouldn't be ashamed to say you were wanting to do something else. There were a million better ways to invest your time than watching the Huskies in from Fall of 2016 through Spring of 2018.
If you don't watch this year, you are 'casual' for sure.