This may get me downvoted to hell, but my take on BM key for 5k gold is:

It’s a gamble !!! If you went to casino and spent 20€/$ and lost, it would be your own fault and noone would feel sorry for you and badmouth the casino for it.

It’s the same here, did you/ I know it was a gamble? Yes Did I/you get what we wanted? Probably not Did they force us to buy that key? Hell no

So please don’t shit on WG for giving us a gambling machine, in which you willing pertake, and then you demand your money back. Next time just don’t buy the f****** loot box.