Aaron Marino of alpha m. has a big style pet peeve, which is men wearing pleated pants. If you wear your pleated pants up to your belly button, the pleats will lay flat.
We don’t wear our pants up at our belly button these days, so when we wear the pants at our natural waist, the pleats open up. The look is pear shaped with birthing hips. With suits, finding flat front pants is challenging. Do some digging to find the designers that are designing flat fronts.