A "lynch mob" is a pejorative term because it refers to a group of people who deprive another person of both their right to a fair trial, and subsequently their right to not be murdered (it also carries connotations of innocence, and a mob looking for a victim that fits a particular preconceived profile).

Banning speech is reductio ad absurdum of arguments that what happened to Eich should be somehow prevented. Because that's all that happened -- people making choices about what products to use, and talking to other people about that choice.