Kerberos and SSL don't care if the earth is in the correct position (reasonably or otherwise) relative to the sun and/or planets. Clocks being in sync with the physical planet is irrelevant. They are still gonna be just as in sync globally along each other with sub-second precision as always (sub-ms precision in many cases).

Being up to an hour off will start having a noticeable impact on sunset/sunrise, but for some reason we fuck with that twice a year by an hour anyway so who cares I guess?

As an environmental scientist, I care. It hurts me that there is a drift in my data that is entirely anthropogenic and I must spend time to account for.

We have DST changes because when we should have an extra hour of daylight matters. If its going in one direction though, we can just make DST 2 hours earlier and standard time 1 hour earlier. Not sure of direction. Cancel changes midway through.