The point he is talking is the options for leveling.
In rank 8 you could lvl up by grinding(faster for people rushing) or dungeons(slower but steady). I have grinded with my main while i ran dungeons on other alts that i could lvl without hurry. I never ran dungeons thinking of getting silver, it was only a simple option with fast setup.
Nowadays the only option is grind, i know a lot of people that hate to grind for exp but like doing dungeons and missions for example. Also, grind by yourself can be very hard to some builds like shops and it is hard to find grind parties if you are not with meta builds
