With the electrical appliances and countertops, Ikea makes the money in kitchen sales. That is probably also why the policy is to build everything in such a way that it is not compatible with third-party appliances or other countertops in standard dimensions without craftsmanship skills.
I would also place the stove on a Utrusta base, as the air circulation is ensured there through the vents in the back. In addition, the Utrusta bases have a different height. With the normal shelf bases, the shelves are placed on the shelf pin, but not with the Utrusta base. Therefore, the top edge of the shelf and the top edge of the Utrusta base should actually have different measurements regarding the hole you choose for fastening.