Not terribly surprising. The time in my life that I was most on top of my finances was when I was using the old YNAB which required manually entering all purchases and manually reconciling your account. The effort put in to keep on top of it made me hyper aware of what I was spending and where. It was great, but it takes too much effort.
I don't know if better tooling could help, pointing out subscriptions and things like that so you can easily check if you are still using it and cancelling. How do we fix this without requiring everyone to manually keep a checkbook.