permadeath is a gentler mechanic in games where a run lasts at most an hour or two and either ends in a win or a loss, and not being able to play that character any more.

there's also the eve online / tarkov variation where dying results in the loss of most or all items you had equipped -- potentially a major setback if you were wearing most of your wealth -- but items stashed in other locations and skill point based progression is largely not impacted

Curiously, I'm perfectly fine with roguelikes since long ago, but I can't muster emotional energy to get back to XCOM: Enemy Unknown (the modern one) since one of my characters on a team died there (I still vaguely remember the map), even though I could theoretically reload a save from before it happened. The feeling doesn't seem to wane, and surprises me to no end every time I think about that.

Roguelikes are turn based, you have plenty of time to set up a strategy.