Designer perspective:

https://uniform-wiki.win/index.php/Is_AI_Butchering_Complex_Edges%3F_A_Practical_Tutorial_to_Rescue_Crisp_Hair,_Fur,_Glass,_and_Fabric

Designer perspective: "Here’s the thing—I've tried everything from Remove.bg to Adobe’s own background remover. Truth is, Remove.bg is great for quick, low-res proofs but it often butchered the edges on my complex illustrations