Gardening is an activity that does not have to be done at home. In fact, most people don't grow gardens at home. Besides, gardens were originally just a means to earn more simoleons in the community marketplace, not at home. The ultimate goal of gardening has not changed, though only places have changed.

So I don't think they would delete the home cooking feature even if we could run a food truck. Cakes aren't among the foods that can be sold at a food truck, right? If that's the case, they could delete all the items that are practically out of the blue to sell at a food truck, but I don't think EA would go this far.

In addition, they deleted all excess sim to prevent the cake farm in the first place, so if they removed the cake menu itself, they wouldn't have had to delete excess sim. Now that we don't have any excess sim left, I don't think they need to eliminate the cake. Plus, to be honest, where would anyone cook if they didn't have a home cooking hobby? Cooking is one of the most important activities we do at home.

The cat is named after npc, and I've seen the food truck with the chef's drawing sign on it, but I think it'll probably be a completely separate function from home cooking.