Why mailing everyone a ballot will cause voter fraud

Here's a video of a postman throwing campaign literature for a Republican candidate into the garbage.

WATCH: US Postal Worker Caught on Video Throwing Stack of GOP Congressional Candidate Campaign Mailers in Dumpster https://t.co/ApQTG0KH0B

— Juanita Broaddrick (@atensnut) June 27, 2020

If postal workers who are members of a government union and hence almost all Democrats are willing to do this is there any doubt that some of them will take some of the millions of ballots Democrats want to mail to people who have moved or have died and either use them themselves or give them to others who will illegally vote with them ?