macOS unable to open any non-Apple application

It doesn't have this particular failure mode, at least.

Both Linux and Windows perform similar checks.

I'm sure Linux (the kernel) does not. I don't know of any Linux distro that does, but, I'd be curious if you can point to specifics.

If you could point to any documentation of Windows performing app-start OCSP checks, I'd love to learn more (and recant my earlier statement).

I assure you my Linux machines do not.

That's a rather extraordinary claim. It's really setting off my BS meter- Can you show us where the code is to do that in the Linux kernel?

Do you know of a Wireshark filter that will reveal this on Ubuntu? What you're saying doesn't sound credible, but to incentivize, here's the bet:

If you can provide a Wireshark filter that will show a certificate check on a vanilla Ubuntu 20.04 system when the following commands are executed in a bash shell, then I will donate $25 to a charity of your choice. Commands follow:

    cat <<HEREDOC >/tmp/file.c
    #include <stdio.h>

    int main() {
      printf("Hello World");
      return 0;
    }
    HEREDOC
    gcc /tmp/file.c -o /tmp/app
    /tmp/app

No, Linux does not.

Linux does provide application-level and per-application security, as well as sandboxes, but they exist to help the user and the user has complete control over them and their system.

The comment you are replying to states other OS' do not have this failure mode so your response is quite the non-sequitur, nevermind of questionable veracity (linux).