Compared with Python the language ergonomics of R are confusing and inconsistent.
I guess momentum and establishment is also a feature in itself though I’ve personally never felt that, one of the selling points, the esoteric statistics packages at the edge would be of any use to me.
The use I’ve seen is reminiscent of Spyder and Notebooks: tangled, unreadable mess of line-by-line execution where people are prone to re-running stuff out of order.