For a total BS claim, it usually doesn’t take more than calling their bluff. Or just ignoring it.
Employers usually just bet on people just following the language and not challenging it because they think it’s valid and they think they’ll have to go to court.
In reality, a business doesn’t want to spend tens of thousands of dollars on something their own lawyer says they’re going to lose.
Nobody is taking $12/hr unskilled employees to court over noncompetes. Lighting cash on fire is a more efficient and fun way to accomplish the same.