The biggest misconception presented by that video (and by others) is the idea that the debt/money supply must continually be increased because if all debt is paid off then there is no money to pay the interest. I believe that is false. While paying off debt reduces the money supply, paying interest does not. Interest payments do not affect the debt/money supply. Also, the premise of all debt being paid off is absurd.
banks do not "loan the rest out" of peoples deposits
what actually occurs is the banks only need to keep onhand(inbranch/inATM) a small percentage of peoples deposits for people to withdraw small amounts over time. the rest of the amount is marked as your money total in your account(it doesnt move nor get spent behind your back).
separately the banks can see the combined totals of people deposits and the banks are then allowed to
create another allotment of balance which is the "money creation" part..
for instance if there is combined 5 trillion of people bank account money in circulation. the bank has its own policy to create upto 32 trillion of new money debt
they average this out over a 30 year period meaning each year they can only give out just over 1 trillion of new money. hoping when people pay back the amount it fills that allocation so that banks can have balance in that allocation to send out again
the reserve for the 'loans' is not people bank balances.. its a separate pot based on math proportional to peoples bank balance
the fractional part s not that 5/6ths of your money is being sent out as a loan.. its that if the banks have $5trill on accounts they can only print $32trill which has to be spread/used over a long time.
as for the funds they have to keep on hand. which is like an average bank balance being $25k and them only allowing $500 daily withdrawal means that only have to keep on hand 2% of peoples funds
..
the 'keep on hand' to facilitate withdrawals amount is separate policy to the money creation policy of the amount banks can loan from their special allocation