It is not unreasonable at all for a Presidential candidate to be required to disclose their previous clients, especially when they worked for a firm as interwoven into high-level shyt and with as many high-level clients as McKinsey. He very well may have just worked on nothingburger stuff, but even run-of-the-mill McKinsey projects could be pertinent to his candidacy and relevant information for voters. Like, if he worked on projects like the ICE one, or if he was working to gut companies in the name of efficiency, the voters have a right to know. It's a pretty fukked up precedent to set that it's ok to have a big redacted section on your resume when running for public office. It's fundamentally anti-democratic.