I avoid grocery shopping at a time that's convenient for me because of all the karen's
Why do you need to avoid grocery shopping at those times?
I hate karens, they are often in the showcase talking on their phones for no good reason.
While some people can be very forward with their actions, it's indeed best to not engage with them so nothing can escalate.  Even though it's only for a short time, it can still become a negative experience.
Yeah, but I feel like all the karen's have nothing better to do.
You are the master of your own time and can shop wherever, but I think it's not fair to label these types of people as a "Karen". It's unfair to the people who were born with this name, and it can cause unnecessary ridicule for them.