Comment 1 for bug 1918930

APT can't know how "critical" the other packages are compared to the packages which failed to download (which really shouldn't happen to begin with). I mean, if you don't (normally) use an SSH server, but hard-depend on a sublime text-editor experience…

Have you tried the --fix-missing option the error message points to? It will make it so that apt still shows the errors, but it will continue on and install all packages it could successfully acquire. That is still a failure for the whole process though (if that would be silent it would be too easy for an attacker to fail these downloads and make you believe you are up-to-date while nothing was installed – especially in unattended processes).

Perhaps we should make that an interactive question in "apt" to have it more easily discoverable for an interactive user?

(not commenting on the LP things, you may want to talk to them directly about this rather than venting in an unrelated bugreport)