You would need to buy an adapter to use the 20 oz canisters, but lots of people use them.
You don't need a temperature controller for serving beer from a fridge, only if you use a freezer.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk