Greg PierceI set up Shortcuts automations to deal with political SMS spam. Anything with “Stop2End” or similar gets an automated “STOP” reply.
Definite sanity saver.
Nic Lake 
@agiletortoise How do you handle any instances where you do, in fact, want the text messages?
@niclake I mean, I guess I don’t? But you have control with the automation trigger you setup if you need the “contains” to be more specific.