After this update board owners will only earn from non-whitelisted members So the point that comes to our mind after this update that owners will not whitelist members or give them late approvals just to earn more . 

Challenging Situation for members 

Now members have to be careful when they are joining a new board because if they work hard in any board but later they didn't get approval their hard work going to be waste , So they need to be careful when they are choosing a new board for posting 

Challenging Situation for Board Owners 

Board Owners have to gain trust of the members, Owners have to make sure that they will give approvals if members keep posting quality content and make good engagements and contributions. 

Disadvantages of not giving approvals 

If they not give approvals to members, They may face less activity in future because new members will not join that board because of their bad reputation 

Report 

You can also report that board who are just focusing on their earning and not giving approvals to the members even after publishing quality content.