To me, the terms "general public support" and "casual listener" both are used incorrectly by Kpop fans.
So many times i read people saying they stream a song but only consider themselves "casual listeners". I'm like, bruh, if you actively make a choice to put a song on your playlist because you like it, you're not a casual listener, you're a casual fan at least. Casual listeners are people who just listen to radio or let YT algorithms determine their songlist while they're working out at the gym. If you're actively choosing a song to listen to, by definition you aint a neutral listener anymore.
The term general public support is similarly problematic. If you're supporting someone, by definition, you're not a member of the "general public" anymore. You're at the very least a casual fan. Maybe not a hardcore fan that buys all the albums and merch, but STILL a fan nonetheless. Also, to claim that any artist has GP support doesnt really make sense since the GP is ginormous. IU supposedly has widespread GP support but look at her streaming numbers (only 500k UL on Melon, maybe another 500k on Genie, Bugs, Flo etc) and compare them to the general population of Korea (50 million) - shouldnt someone who supposedly has GP support have at least 25M Koreans streaming her songs?
All that said, i've already given up on my arguments and now just use these terms the same way everyone else does lol. It was a losing battle trying to change people's minds.