It depends largely on what you’re doing with it, but there’s no way you can be as fluent and up to date in finance. If its just a matter of sticking your savings chunk somewhere, any finance major can handle it, but to get the most out of your money he/she has to be researching market conditions daily or hourly, not quarterly.
I have a BS in finance and am in the process of doing an MBA and I still use a financial advisor for help.
Everyone should be well educated on where their money is and WHY, not just giving it to someone and ignoring it til retirement. So you’re point is valid, but I still think everyone can benefit from the pros. (The pros that aren’t trying to screw you that is - there are lootttssss of those).