One issue, as they point out, is that we now do minor version updates every 6 months, and you need to update for each one. (We have a 3-4 month period where both are supported, but e.g. 15.0 will be EoL before 15.2 is released.)

We are aware that this isn't ideal for some users, but it was a necessary tradeoff. We might be able to improve this in the future (possibly as "security updates for the base system, but no ports support") but no guarantees.

It does seem like a weird omission doesn’t it?