I’m on the left, but I’m far from a communist, much less an authoritarian one, and I 100% use lib or liberal as an insult. I think to most people younger than 50, Liberal refers to a certain type of Democratic voter. They’ll hang a BLM sign in their window but support NIMBY policies that keep people of color out of their neighborhoods. They’ll talk a good game about labor rights and unions, but still go to Starbucks and throw a shit-fit if their order is wrong. They cared very deeply about Iraq and Guantanamo when Bush was President, but stopped bringing it up once Obama was in office.
The Third Way Democrats of the 90s basically turned American Liberals into Neo-Liberals. I will still support them when I have to, since they hold all the levers of power over the only ostensibly progressive party in America, and not siding with them at this point basically ensures the rise of fascism, but I have no love for Liberals.