Is there a need for estimated pending rewards section?can't it just be directly added to the main rewards wallet

I was waiting for my claim button to appear today when i thought in my mind that if the estimated pending rewards section is really necessary, can’t the ads reward be directly counted in the main balance for us to tip it or withdraw it to uphold(a worst experience, I have still not got my account verified, its been over 2 months)

can we just know why the estimated rewards section is there, or is this going to be implemented in the future updates where there will be no estimated rewards section??

If there is a valid reason for this, can we please know that reason
btw I have still not got my claim button in some profiles in my pc