I think I actually left words out and so my point was lost. The difference I see is that OpenBSD is so well documented that one can judge wether or not any of

I think I actually left words out and so my point was lost. The difference I see is that OpenBSD is so well documented that one can judge wether or not any of the updates is needed. One can consider each release as a standalone environment. The change notes going forward can be monitored. Upgrades are only required for feature changes. There is no requirement to upgrade.