> (...) but who knows what secure websites are signed by Digicert or some other CA?
Well, what would be that "secure DNS" in your opinion?
If you assume someone can subvert Digicert would they be able to subvert that "secure DNS" too?
The big differences are 1) you can choose a domain under a gTLD that isn't run by an American company (or other country that is part of your threat model), 2) you can choose to run your own gTLD (at a certain cost), 3) admittedly Certificate Transparency for CAs is much further along than CT for DNSSEC, you're right.
Also, I don't understand how you can pick Google as an example with a straight face. The most commercially important websites in the western world are all run by companies that are controlled by Five Eyes governments.
I'm not even opposed to that! (I'm not a fan of NameCoin, or any-coin at all, but whatever). I just think, be coherent about things.
Depending on your use case, a better approach might be to host your server in the Tor network, in which case NameCoin would indeed make some sense:
https://www.namecoin.org/2017/06/22/tor-prop279-release.html
In the mean time Happy Hardware Hacking because you know your existing security methods cant detect it, but your CPU fan may be the only indicator you have that some malware is running alongside your OS, in a QubesOS/Hypervisor style manner with a coreboot/libreboot bios gone rogue.
Prove me wrong!