No, you are correct. Two stud primitives are incorrectly flipped in 4733, and should be corrected.
Stud primitives should be rotated into the wanted position. Never fipped.
(The only exception is the bottom stud that is always used mirrored, but only on the y-axis. https://www.ldraw.org/library/primref/#studstud )
LDraw uses a right-handed co-ordinate system where -Y is "up".
https://www.ldraw.org/article/218.html#coords
Stud primitives should be rotated into the wanted position. Never fipped.
(The only exception is the bottom stud that is always used mirrored, but only on the y-axis. https://www.ldraw.org/library/primref/#studstud )
LDraw uses a right-handed co-ordinate system where -Y is "up".
https://www.ldraw.org/article/218.html#coords