"Debugger" is not just a "dev tool I like." It's the only way to see what a program is doing while it's doing it, unless you're just writing to your console and hoping you captured enough state with your write statements.
I understand there are people who haven't used debuggers before and don't know what they're missing out on, but there's no excuse for that anymore because it's become much easier to set them up and use them.
Your response doesn't do a lot to convince me that "debugger" is anything more than a dev tool you like. It is not the only way to see what a program is doing while it's doing it -- there are plenty of other effective ways. I have encountered many bugs where a debugger wouldn't have been a help at all.
To be totally honest, having such an absolutist view makes you look inexperienced -- and accusing people who disagree of "malpractice" is absurd.
I understand there are people who haven't used debuggers before and don't know what they're missing out on, but there's no excuse for that anymore because it's become much easier to set them up and use them.