Maybe I've always worked at larger employers than most, but a one year surprise to reevaluate and transition your operating system sounds incredibly disruptive when the original promise was support through 2029 and the "successor" is very different.

In my experience major updates like this are discussed annually with eval, testing, and milestones set weeks and months apart. The transitions are often pushed a year or more when issues come up. Resources are dedicated to all of this.

It sounds like there are a lot of similar options with relatively easy transitions (away from Red Hat), but you still have to choose who you trust going forward and carryout the transition.