I've never seen "Roguelite" as derogatory at all. It's an annoyingly awkwardly neologism, but we legit need a name for the genre that makes heavy use of Roguelike elements (permadeath, procedural generation, emergent combinations of elements) while completely ditching traditional Roguelike gameplay (turn-based RPG dungeon-crawling). Games like Spelunky and FTL and Dead Cells clearly draw inspiration from traditional Roguelikes, but they just as clearly aren't Roguelikes themselves.