Should I ask contractor to redo the bends

I just had a dishwasher drain installed by a contractor who has installed the pipes from the photos. Based on what I have read 90 degrees bends are a big no-no and here there are three(marked in orange). #3 running from the p trap at the dishwasher into the basement(marked in green). #2 turning across the basement and #1 turning down into the boot of the main sewer line. Contractor is trying to convince me that this is acceptable saying they sell 90 degree bends for a reason. Is it reasonable?