And condoms are only 99.8% effective, so let's not use it? You can always pull out in time or verify checksu^W^W Plan B?

> But really most of all I live in a world of Git repositories

That's great for you, but 99% don't even know what Git is, just like checksums, cryptographic hashes, Merkle trees, digital signatures and reproducible builds.

You just miss the one imortant thing: ECC isn't that helpful where you have the means to check and verify the data. ECC is the only way to at least know what something is happening with data when there is no way to check.

To give you a slight idea I would tell you an anecdote from my L1 life almost two decades ago:

I visited a client who claimed what the PC was working erratically and constantly threw weird error messages.

Welp, the usual deal, just some ugly software or a virus. In the first 3 minutes I got like 5 errors about failing to load a .dll from C:\WINDOWS\SYSTEM33\USER32.DLL, nothing unusual, just need to.. WAIT. Why system33? Stupid virus masking for a well-known folder? Doubt. So I go to C:\Windows and I see:

  System32
  System33
  System34

If you are a smart fellow you probably already understood what that was a bit-flip error which somehow managed to be in the in-memory copy of MFT of the system drive. And this is the only reason the user noticed it - because sometimes programs wouldn't start and sometimes there was weird error messages. If that error was in the data area of some program - it wouldn't be discovered at all.