Google account registration now requires sending an SMS via phone instead of receiving an SMS

I think a security system is at work there, and based on a certain set of metrics, it determines whether or not to send an SMS. Sometimes a QR code appears for me, and sometimes it doesn’t. Similarly, when a QR code does appear and I scan it on my phone, sometimes I have to send an SMS, and sometimes I don’t. It all depends on the quality of the proxy and other factors.