DeletedUser404 it answered my question
it did. You just don't understand the answer.
DeletedUser404 how significant is Google WiFi being based on ChromeOS for security?
Not at all. Zero. There is zero benefit, as I already said. You can't compare desktop OS'es with network gear software.
The blog doesn't mention ChromeOS's benefits, but it briefly mentions sandboxing once in a while:
It's good you linked this.
If these calls fail, the malware deletes itself under the assumption that it is being run in an isolated sandbox.
This is because the malware assumes it is running in a sandbox on a security researcher's virtual machine. This has nothing to do with sandboxing on a router OS.
DeletedUser404 escape a kids safe sandbox
Why would you even cite this?
This outdated version of the Linux kernel has 233 known security vulnerabilities
Now, not quoting the rest of this news snippet is dishonest. Here it is:
In his opinion that are no good consumer routers. None. He says you need to switch to more involved, complicated, and expensive enterprise-grade network equipment before you see any improvements
It seems like ChromeOS would be more protected against these kinds of threats
It absolutely wouldn't.
Can't I just rotate MAC addresses and use a VPN?
You've been fed a marketing lie about what VPNs do. The router would be connected through the VPN as well and just ping Google that VPN's IP. The same goes for MAC addresses. There is no use rotating them. The software will just report what is on your network. You would have to block all Google domains on a firewall level (which you don't have when you run consumer junk like Google WiFi), which would probably break the product anyway, in some shape or form.
Tl;dr: I really encourage you to get familiar with network components and terminology, since you're throwing around terms that have little to do with the topic.