If Play Integrity existed for security rather enforcing an anti-competitive, illegal business model then Google would use the hardware attestation API to permit GrapheneOS. Each day they allow a device with no patches for 8 years but not GrapheneOS makes it more of a joke.

Google's Play Integrity API is not a security feature but rather it pretends to be one. Both Apple and Google are failing to protect their users against real world commercial exploit tools. Banning using one of the only options people have for better protection is anti-security.