In terms of food production it’s absolutely viable. It’s not economically viable though because farming has extremely low margins that can only be made up at scale.

Also, most modern machinery isn’t useful on a small scale, though there are some exceptions. So small scale farming will be quite labor intensive. So the OP here is kinda right that most people don’t want to put that much labor into it.

This is why I think small-scale robotics is going to be important to future small-scale farming, but we haven’t quite gotten there yet.