I would say there's a difference between being able to read a contract and negotiate one.

For example, one common clause that 'offends' a developer might be something starting any work done whilst under their employment remains the IP of the employer.

It's one thing to tell the recruiter something offends you, but another to negotiate an alternative.

For that's what negotiation is. Understanding why the employer requested what they did, and suggesting something that achieves that reasoning but satisfies your concern too.