A good professional banker, would have helped with essentially every finance related issue the poster may have had. Including getting accounts more organized to help with earning more than the .01% banks usually pay for their checking accounts.
It's like concierge banking, you get 1 person that will just make all of your bank and finance problems go away. You need a house loan, your person would just make it happen. You need financing, they can help with loans, going public, seed rounds whatever you need. They can also help you locate attorneys to help draft financial contracts, etc. Tax specialists that can help you minimize taxes, etc. There isn't much of a limit around both personal and business finance they wouldn't at least help get you pointed in a semi-sane direction with.
Assuming Alex was any good, which clearly they weren't that good, since they did such a terrible job of explaining all they could offer to the blog post writer. That's partly on Chase, but probably mostly on Alex.
We have a banker and I needed to buy a car recently, I told them my plans and they analyzed various payment options(loan, leasing, paying cash) and gave me a recommendation(just pay cash). When it came time to actually buy the car, the dealer wouldn't take a credit card for the entire cost, so my banker organized a cashiers check so I just walked into the closest local branch, picked up the check and was back at the dealer in 5 minutes(not including travel time).
Sure they can do the whole smooozhy mess as well if you really want that, but we don't, so my banker doesn't do any of those things with me. They know the sorts of charities and things I like, so if the bank ends up sponsoring something in my area, they will let me know and organize tickets or whatever if I wanted. I rarely do those sorts of events, but there are certain ones I like and my banker knows that and just organizes tickets and what not for those events once or twice a year that I like doing.