[3pt14159]

No they shouldn't.

For non-classified contexts, they should be properly regulated. For example, there should be a term limit that is something reasonable, like 18 months, and there should be a provision that the duration of their enforcement is paired with ongoing compensation at the same terms as during employment. So if you made $200k cash plus $100k Stock options per year, on the moment your employment contract ends if they want to make you unhirable from their competitors it should cost them ongoing money.

For classified contexts, it should be a longer term for some fields based on national security concerns and ongoing renumeration should not be provided, given it is literally national security. This nonsense where British pilots were training non-allies on UK flight tactics right after leaving the RAF is bananas.