Technically that could be, but in practice there's a huge difference. In addition to several private phones I also have a work phone, and that number isn't set

Technically that could be, but in practice there's a huge difference. In addition to several private phones I also have a work phone, and that number isn't set private. On that one I receive scam calls, ads, phishing, questionnaires every single day. My auto-blocking app stops a lot of it fortunately. On my own phones I never receive a single one of these. Not one.