I thought I would just throw this in here to dispel any witchcraft rumors. What I showed above was just a method for making a semicircle follow me where the segments finish perpendicular to the face, as is needed for follow me to complete the faces horizontally.
But it is just half a full circle follow me, albeit half a segment rotated. You can see the difference in this image, the one on the right has vertical faces because of the rotated circle , the one in the middle has sloped last faces either side because it is a split of a full follow me (the gif below) and the one on the left shows what happens if you use a semi circle for follow me. It rotates the beginning and end faces to be perpendicular to the first and last segments.
Follow semi.jpg
GIF 27-04-2023 12-53-45 PM.gif
The two things happening offscreen are, Orient faces, and Soften/smooth.
D