"We need to reduce the Numeraire payouts significantly. For the data scientists, it is a significant short term hit but it preserves the long term value of their Numeraire holdings and the Numeraire they will earn in the future.

Changes

• Reduce NMR payouts ~90% to NMR 1510 per week
• Increase staking payouts 3x to USD 3000 per week

These changes will apply immediately to the current Numerai tournament, and all unresolved tournaments as well including all stakes."

That is a pretty drastic change in payouts.
On the other hand,

"These changes encourage data scientists to hold Numeraire, and stake it even more than before. Even with this 90% reduction in Numeraire payouts, the prize pool is still more than 10x higher in USD terms than it was two weeks ago."

it still sounds pretty healthy.