It's a lot less risk for an organisation to appear prudish or paternal than to give their opponents a free attack ad about "corrupting our children/society". T

It's a lot less risk for an organisation to appear prudish or paternal than to give their opponents a free attack ad about "corrupting our children/society". The weird rules (apps vs browsers) likely just fall out from the "censorship theater", in a parallel with airport security. It's an escape hatch, giving the organisation an "At least we tried!" defence.