I'd argue that it's important to live in the present for these sorts of things. My phone running GrapheneOS isn't going to start blasting ads or auto-installing bloatware during its lifespan, and since the monitors I possess have none of the "smart TV issues" I don't need to worry about those for the lifespan of possessing the device.

Yes, the world will likely try to break GrapheneOS and make monitors just as much of a monetized hell. However, a free and open source operating system cannot be internally enshittified, and used/commodity hardware systems allow you to pick and choose something that doesn't have ads spewing at your face.