For simple projects and if you don’t mind Eero having the ability to change your dealer access with an app update you’re correct. However, as soon as true VPN, VLAN, or multiple SSIDs with different configurations are presented Eero is a dead stop. Definitely vetting your client before selling a system is the important first step but if you offer Eero as your sole choice I’d be surprised if you haven’t run into a limitation that really makes you wish you had a more open system. Unifi app setup and remote management is about as easy as it gets.