

Not everyone buys a separate device for their children or knows how to/can set up a user account.
This comment is a parenting related issue, the technicality illiterate might forget to take the proper precautions when letting their child use their phone and blame the game instead of taking responsibility for their actions.
Preventing purchases should (as far as I am aware, is) be an app store level setting on mobile devices. Parental controls should be better than they currently are, but ID requirements (or other PII) are not the solution.