Mike Lindell is not comparable because he is a much higher-profile figure. The higher profile you are, the higher the threshold for proving things like libel/slander, or in this case, intentional infliction of emotional distress.
The salon owner would have a legal case if she could prove that someone:
1 - acts.
2 - That the act in #1 above constitutes "outrageous conduct"
3 - That the act in #1 above was done purposely or recklessly for the purpose of causing emotional distress so severe that it could be expected to adversely affect mental health, and
4 - That the act in #1 above actually causes the type of distress described above in #3.
https://www.law.cornell.edu/wex/intenti ... l_distress
I'm not saying this is an easy case to win or that the salon owner even has a case. What I'm saying is that generally speaking, there are limits the amount of "social punishment" you can engage in against someone who had done or said something with which you disagree.