ggplot: Export ggsave files to emf using ragg fonts

Question

I'm struggling to combine the use of the ragg font package with ggsave to an 'emf' file. If I try to use something like this below having installed the 'Myriad Pro' font (https://fontsgeek.com/myriad-pro-font?ref=readme) using the ragg package:

ggplot(mtcars, aes(x = mpg, y = wt)) + 
  geom_point() + 
  theme(text = element_text(family = "Myriad Pro")) -> plt

ggsave(plt, filename = "test1.emf")

When I then insert the resulting emf file into a word document and then save it as a PDF, the text pixels:

But when I use exactly this procedure using the default font, then this does not happen:

ggplot(mtcars, aes(x = mpg, y = wt)) + 
  geom_point()  -> plt

ggsave(plt, filename = "test2.emf")

Any idea on how to solve this? I looked in ragg for the right device to use but I am none the wiser I'm afraid.

Many thanks!