Thanks, it's good they took the time for this write-up, but hard-disagree on the premise.
A phone-number is increasingly linked to PII, and thus, so too become your Bitcoin purchases.
I and a lot of people I know do NOT have phonebook contacts as the main contacts page - Instead, linking this to Nostr, or potentially other social media platforms would've been a better way as it gave users a chance to not inherently attach PII.
Regardless of Vexl's future plans with ID, this is a risk that may come back to not only bite them, but especially their own users.