It still doesn't makes any sense economically the renting part of mining facilities with their coins
If it was profitable to mine this way they won't need use to use our token to do that... They can do it themselves !
So that's a big joke, if there wasn't this mining part for this coins I will say ok for the staking part (it's like an aidrop for holders)
It is like saying,
why people deposit in banks and why not issue loans directly.
Or why the banks issue loans and not do the development themselves.
Or why rent and not just buy your own house.
Or why rent out a house and not just sell.
...there is reason for everything (and yes, some may not be the best option).
I assure you, they are mining but at the same time, securing guaranteed return from those who rent. It reduces their risk.