1. Discuss with your employer to get the clause revised
2. Validate anyway
3. Change jobs to one without the clause
4. Give up on the idea
If you speak to your employer and they don't budge, make clear it's a quitting matter, unless you'd rather just forget the idea.
High risk of failure, high risk of litigation if we took your questionable anecdotes without any proof at face value and suggest to OP to do the same.
This is especially true for large companies with people who are hired to handle litigation and IP risk management.
How would discussing your contract with your employer get you sued?