I'm asking honestly, not trying to make fun of it somehow.
Take Mint, for example. It is impossible to have an overall budget. You can only set budgets per category. There does not appear to be a modern tool that will show me a progress bar of where I am on spending per month. Every option I've ever seen requires budgets to be set per category.
There are lots of different ways people want to see data, and many of these flashy/polished tools (like Mint, Simple, whatever) give a giant "fuck you" to anyone who doesn't think in exactly the way the program was designed.
Not sure where you got that. It's a single file with many transactions laid out in a straightforward double-entry accounting format.
I'm a developer, so the draw for me is that that I can write a few scripts to translate my various online accounts' downloadable formats into the simple text format while automatically adding in expense categories based on regex. I can't do that with any other apps I've seen.