Fortran programmers find it much "easier" than other languages. You are arguing about a subjective matter here. The fact that there are so many R packages and users shows it is useful to a large enough subset of users in statistics/data science domain.
Speakers of English think it is easier than Swahili, but we know from language acquisition studies that Swahili is easier to learn in the large.
Your use of "subjective" is imprecise and overly relativistic. Just because something has to do with the human mind, or human experience, doesn't make that thing a priori subjective.
