read the above links: so far only the TN-Grid admin has provided reasons for the problems; unfortunately: no word from the Asteroids admin

Got a recent direct link to the tn-grid admin providing info? Following your steem links yielded no such info.

Asteroids: Tasks in progress 102347
TN-Grid: Tasks in progress 39412

So it's not free money, because they're actually performing the computation.

I do believe that projects utilizing a small quantity of users is a concern regarding the validity of returned work, however that's a risk which they have accepted and is not of our concern.

If they're acting fraudulently then their accounts will be banned.

By forcing projects out of the whitelist you are attacking another user's earnings, potentially many small users who haven't staked in the last few weeks would be affected.