No one mocks saints in heaven...Except you guys by claiming they have to stop in purgatory to continue to pay for their sins that Jesus Christ didn't quite complete...
Look a little deeper, you'll maybe find where your perceived mockery is actually directed to...
It is not consistent with sanctity to require a purgatory. Maybe some saints did go through it, who knows? — but it is not what we commonly think of saints. No payment for sins is occurring in Purgatory though, — Christ fully and completely atoned for any sin anyone has committed or will commit. In purgatory, cleansing in preparation to enter Heaven is happening. Most of us are not ready as we are.
Where did you do your studying?