I don’t think that tractors will be a big issue. Most of the farmers I know have at least two or more ‘old school’ tractors on the farm, kept as collectables, but able to go to the field if necessary. The farmer I drove semi for last fall has around 20, from 65hp up to 210hp. All in running condition.
Next year may be fertilizer and chemical shortages; that’s a big worry.
For long-time farmers that’s probably true. But it’s going to make it a lot harder for newer farmers.