Taxes otherwise who will do the roads !?!? /sarc 

 Real screen revolution solving the PWM issue that we are all plagued with. If you partner and/or make this device work with GrapheneOS then you will be the new ipad for tech savvy people!

The only thing stopping me from buying 4 of these for my friends and family is the Android 13 - that probably has all your personal data sent to Google. 

 Spare 3 minutes to read this, and you will understand. DYOR
https://grapheneos.org/faq#recommended-devices 

 It depends on what your threat model is. 

 If you care about security, Lineage is probably the worst option. Divest is mostly for old devices that has many firmware exploits in the wild.