There not much relying involved. It's not like Android, which is considerably less useful without the Googley bits. It's just a regular Linux desktop with Chrome pre-installed.
Even if Google would kill all of Chrome in its entirety you could still run other software on it. You would lose secure boot but that's about it. It's more like a PC than an embedded system.
Exactly. I am running android with microg without any google software installed. I cope with it, I had to reverse and patch banking software as it was using "safety net" but it works perfectly with few smali gotos added. If you take chrome os you have installed spyware as an os.
Sorry, maybe "I have nothing to hide as a person, but as a bussiness I have plenty to hide.