It probably makes it harder for you to read some bad handwriting if you assume a different order of strokes. I tried to find a nice picture that exemplifies this but couldn’t atm.
Regarding japanese people judging you. It depends. Most will be impressed if you can write anything at all. But if they are into teaching at all they will at some point surely try to correct your stroke order for japanese ^^. It has real benefits like I tried to explain in the first paragraph.
Stroke order sometimes saved me big time, when I was in some smaller restaurants trying to decipher from the handwritten menu what I will eat.