The first vaginoplasty was done in 1898 on a cis woman, and the procedure was well established before the first trans woman patient in 1931. The first penile inversion vaginoplasty was done in 1903 for an intersex woman and wasn't used for a trans woman until 1952.

Trans healthcare procedures are both far older than cis people believe, older than many accepted medical procedures today, and weren't even originally invented for our benefit.