Not at all. My wife is a pattern maker. At her job they use a software that takes a pattern renders a 3D avatar, lays the pattern on it, sews the clothes, and allows the her to assess the fit and tweak the garment. Her company has gone from 4-5 fittings for a garment to 1 and that's just to get final tweaks and often results in no changes.

The company bought the software in 2019. There is zero reason to put real clothes on a real manikin.