>"they aren’t able to do the reinforcement learning post-training steps"

Not yet.

If there is a need someone will come and fulfill. Personally for me now I do not even want to use top models. Professionally I use AI to help with the coding using Junie agent that comes with IDEs from JetBrains. Junie is told to use Gemini Flash and works fine for what I ("I" being an emphasis here) ask it to do. I tried more advanced models and different vendors only to discover credits going down the toilet without any extra benefit.

I'll agree I guess and clarify that the better phrasing is probably something like "haven't yet shown the capability to."