I don't understand why this attitude is so prevalent in the tech industry. The person writing the upgrade script knows if upgrades can't support n+2 jumps and it takes about 30s to build in a check:

    if(target_version > current_version + 1) // not allowed

It's more work to add it to the docs than it is to put a fail-fast check in the upgrade script, so why put it in the docs where 250k+ admins need to be aware of the limitation and avoid it?

It might be creating 100k hours of waste on the sysadmin side to save 30m of work on the dev side. I just don't get it.