I do agree, it's just someone moving a squeegee round a piece of glass, sections are missed everywhere,
I also believe that a completion should consist of proper rules were the glass needs to be cleaned corner to corner, with any sections missed resulting in a 15 second penalty.
I use both hands all day long and consider myself to be quick, with high standards, I couldn't get away with leaving 8" triangles all over the window were I had missed.
I can clean the outside of an average size McDonald's restaurant in about 7 mins inc drive thru. All sills wiped with moisture pouring out me fore head 😰😰😰😅😅, using 14" unger blade