The gdb TUI with a simple config and a simple readline config from a terminal has personally done wonders for me. I get vi mode, tab completion, syntax coloring, a colored prompt and really all I could ask for. I have aliased gdb to "gdb - q -ex start --args" and the experience is very nice.

If your debugger implements the DAP protocol then Neovim is currently capable of a just-as-good debugging experience in my opinion.

The sole exception in my opinion is remote debugging (it’s not too bad, but JetBrains really bootstraps this part very well).

I think the interesting thing with debuggers, though, is that I relied heavily on debuggers back when I was relatively new to programming (maybe the first 10-15 years or so), but once I started to feel like I knew what I was doing--and the stuff I was doing became a lot more complicated--debuggers started to feel a lot less useful and even frustrating or limiting... particularly so given that to actually make a debugger work really relies on you buying your entire project into some unified concept of how execution will happen, as the ability to step across IPC/VM/network boundaries is otherwise a pipe dream. I thereby only feel like I get value out of stepping through some code only once every year or two, and gdb is more than good enough; otherwise, I always make sure I have really good mechanisms for logging and error handling, and leave the debuggers for when I'm teaching someone how to code.

This but less insultingly.

Eh, I'm pretty good w/ both gdb and pdb (python's debugger) and whenever confronted with an IDE's debugger (or Firefox/Chrome) I instantly feel like I do when confronted with an IDE: I'm at the mercy of whatever UX this thing will grant me. Scripting will be nonexistent/unfamiliar, specific information will be hard to find, etc.

I have a (maybe overbroad) critique of GUI software which is that it mostly brought us pixel-level graphics at the cost of extremely restrictive UX. Or said a different way, GUI apps look better but they're usually harder to get work done in.

Part of that is toolkits, part of that is you're using a mouse which is like driving a space ship with a single finger, part of it is the expanding user base of computing (to people who don't necessarily want to learn say, regular expressions). But like, I script GDB. If your IDE debugger won't easily let me do that (or it will but it's a painfully convoluted UX), it doesn't really matter to me that it (subjectively) looks nicer.