It's most annoying when it comes to recipes. I have some recipes that call for flavored yogurt in specific sizes.
I've complained about this issue to grocery chains and manufacturers and it always falls on deaf ears.
The fact is, people keep buying - even me. How else are we going to get canned pumpkin, diced and stewed tomatoes, sweetened condensed milk, cake mix, yogurt, coffee, frozen and canned vegetables, etc.?
The other thing that makes this stupid is the waste of resources (extra cans, cartons, bags, etc.).
To answer the OP's question, I like the idea of making my own yogurt. I think I'll look into that.