Comment by Saline9515

>The term is older than Trump. Suing everyone who criticizes you is a classic example of lawfare. The goal is not justice but the chilling effect created by your legal actions.

According to[0] the (aptly named) Lawfare Institute:

   Since the term “lawfare” is controversial in some circles, and subject to a 
   variety of interpretations and uses, a bit more explanation about our 
   understanding of the concept is in order. Going back to the 1950s, the term 
   has frequently been used in contexts wholly unrelated to national security, 
   ranging from divorce law to courtroom advocacy to colonialism to airfare for 
   lawyers.

While the term is often used to do as you assert, it can also have a different remit. cf. some of the topics addressed[1] by the aforementioned Lawfare Institute.

[0] https://www.lawfaremedia.org/about/our-story

[1] https://www.lawfaremedia.org/