So many mages with random alphanumeric player names

Hi all

something i’ve noticed in standard silver ranks all these mages with names like jcv43jlke (not an actual name) and the like.

What’s the deal? are they bots? there are so many of them and the strats always seem to be the same too, same decks even just different random names

They are bots (not blizzard bots) being used to farm the rewards track experience ladder for gold.

Low cost arena runs? Starter accounts for cheap?