This shortage is real. We are cooking on a hot plate now with a fan venting it out the window. There's a parts shortage, too. We pulled the master circuit board out of our oven ourselves, (husband has some background - breaker was OFF), and we sent it to an electronics firm that will try to repair it. At least we found out about this online so saved the cost of a repair tech visit who could have done nothing.
This is an old Jenn-Aire downdraft oven. Horribly expensive to replace. What happened is that while baking, the broiler element decided to turn itself on and stay on even after the oven was turned off after we smelled burning rubber, etc. You have to turn the breaker off to stop it. It has been reported elsewhere on repair forums. Some people have tried turning the breaker and oven back on the next day and doing a reset you can do on newer models and the problem will seem to have gone away, but then a couple of hours later the broiler turns itself on again. Obviously VERY dangerous.
I initially found out about the appliance shortage because I was looking for some online for our new home in another state. Everything was out of stock! Better get prepared. I had a professor who warned about coming appliance shortages back in 1990. He said demographics predicted that there wouldn't be enough working age people at some point to supply the aging population with appliances. I didn't get the impact of his worries until now.