Yeah but I don’t think the average smash and grab thief is going to be smart enough to recognize the potential value of the data on the laptop, they’re just going to pawn the thing off as quickly as possible
Anyone smart enough to want the data probably doesn’t need to smash a window, they’ll just access the data remotely when the computer is on and the drive is unencrypted
So even then, it only protects you from the very narrow overlap of thieves who are dumb enough to need to break into cars for a living, but smart enough to harvest data off of stolen laptops