You didn't get the point.It doesn't negate anything. This lens is nearly twice as long, completely the opposite direction hoped-for with mirrorless tech. And it is not technically necessary as evidenced by the RF 35 f/ 1.8 IS which is slightly faster, includes near macro focusing and is about the same length as its Ef 35 f/2 IS equivalent. So, it is huge for a 50 f/1.8
Sharlin's saying that If you want the length of a lens from a patent, you have to subtract the flange distance from it.
So the physical length would be:
total length (from patent) - flange distance
95mm - 20mm = 75mm
If the 50mm 1.4 has a physical length of 50mm, yes the mirrorless version is longer. But that is to be expected. As was said numerous times on this forum, shorter flange distance means all lenses with more than 44mm focal length become longer (by roughly 44mm - 20mm = 24mm), and some with less than that become smaller or cheaper or sharper.
WHich is exaclty what we see here.