Re: "73% of users worldwide use their Google or Facebook accounts to log into other apps"
Last time I checked, the Google-borg wants your phone number to create a faux Google account these days.
Of course, I created my only gmail account back in 2004 and I've declined any additional nudges to provide more information about myself since then (and I still use a flip phone these days).
NB - Apparently an IP address is PII in some highly populated, weirdo places in the northern hemisphere along that prime meridian line, so YYMV.