Message Spam on Mac
This was asked before but had no answer. I have some marginal message spam block capability on my iPhone (mini-12, 15.2). The is zero capability to block spam on my Mac (M1 Air, Monterey, 12.1). Through some burden steps, yes, copy the number and block it in the phone app. That's beneath what I expect from Apple. You really need to address an SW fix to allow users of Apple OS devices to report a spam message, block the sender, and report it for further higher-level identification of mass senders from these abusers.
Please do not confuse this with blocking messages from contacts. I don't keep spammers in my contacts. It has nothing to do with contacts.
MacBook Pro 13″, macOS 11.6