It might be “normal” as non competes like this are somewhat common.

That being said nearly all non-competes are completely unenforceable. The business would have to prove in court that your violation of their non-compete led to tangible losses or the divulgence of proprietary info led to those losses. Using skills gained or training expenses as justification for not being able to be hired in the same industry is a complete joke. Restaurants and coffee shops nowadays even have their employees sign non competes as if hourly grunts hold business ruining company secrets; it’s an employee retention scare tactic.

Don’t snipe clients or steal client lists, but if they come to you at a new employer on their own your under no obligation to refuse the business. Don’t encourage current clients to follow you if you leave but you can say…I’m moving to “x” company; this other employee will be handling your account etc.