I miss when social media posts from K-pop idols were referred to as SNS posts. Example:
"SNSD Tiffany shares new SNS post"
I also miss when idols used the finger heart hand sign instead of the two-handed heart that they do nowadays. I like both, but there was something very 2nd gen and 3rd gen about the OG heart sign that's unique to K-pop. The two-handed heart is universally used even outside K-pop, so it's not as unique.
These are simple things, but I miss them.