> The problem we hit is knowledge: while Terraform is not a huge knowledge hurdle to mount … it is still apparently enough. While good engineers will have no problem picking TF up, … more mediocre ones seem to struggle with it¹.

That sounds just like one of our problems too. Some engineers arent really to keen on learning it either.

But my platform team spends some time on going on 1-1 sessions where we develop new things together with them (mob programming), which gives us possibility to teach and get insights. That mitigates this problem somewhat.