- never signed up for anything like this,
- never donated to or signed up for emails from the DNC, et al.,
- political texts like this come all the time, and
- I hesitate to reply “stop” because I don’t want them to know this is a live number (is my instinct here outdated/inapplicable?)
Blocking numbers is only useful against actual consumer numbers where there’s a real person with a SIM card on the other end.
Bulk calls/texts use number pools, and those pools don’t tend to be reused after a campaign; they’re just rented out to someone else.
So does replying “stop” apply to the number that texted you, or to the whole company?
Depends. Usually it applies to the campaign. Sometimes it applies to the company. Sometimes it just gets you flagged as a responsive human.