> you can get a 35mm 1.2 for your 50mm equivalent on APS-C

According to DxOMark[1][2], the $1400 Canon 35mm f/1.4 on an APS-C body is comparable to a Canon 50mm f/1.8 STM on full frame and stopped down to f/2.4.

[1] https://www.dxomark.com/Lenses/Canon/Canon-EF-35mm-F14L-USM-...

[2] https://www.dxomark.com/Lenses/Canon/Canon-EF-50mm-F18-STM-m...