Malwarebytes on why you should not respond to the obvious smishing texts...
"Why you should never respond
Responding confirms your number is active.
It flags you as someone who reads texts and might engage.
The scammer may sell or share your number.
Some groups build long-term “mark profiles” for future scams. Even though you think you’re only providing them with little to none information, scammers often track who replies, how they reply, and how easily they engage. That data becomes part of a “mark profile”, a digital dossier on you that might include your phone number, the time of response (which suggests your schedule or time zone), and any other information you share.
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https://www.malwarebytes.com/blog/news/2025/07/that-seemingly-innocent-text-is-probably-a-scam