So, I’m not familliar with whatever Figma’s Auto Layout is, but the complaint still feels somewhat wrongheaded.
Design ≠ print design; if you’re designing for a reflowable medium, you’ll have to design to its constraints. A good prototyping tool should allow you to go outside the constraints for the moment, but for a web or mobile designer to dismiss those constraints as the engineer’s concern is about as appropriate as for a typographer to dismiss the constraints of type casting as the moldmaker’s: it won’t work.
Design ≠ print design; if you’re designing for a reflowable medium, you’ll have to design to its constraints. A good prototyping tool should allow you to go outside the constraints for the moment, but for a web or mobile designer to dismiss those constraints as the engineer’s concern is about as appropriate as for a typographer to dismiss the constraints of type casting as the moldmaker’s: it won’t work.