Coming from the excellent tidyverse or even data.table in R, Numpy always has felt like twenty steps back into mindfuck territory.
Doing the lower level stuff that NumPy is used for is really mindfuck territory in R.
I've done only very simple ML stuff using R and it never feels like exactly the right tool.
R is used mostly as a fancy calculator, which is fine in itself, but it makes the comparisons to general purpose languages like Python quite apples-to-oranges.