Does the FTP server print out paper ballots which voters then review and manually scan in a machine? If not then it's totally irrelevant.
Do you have any evidence to support your claim?
[0] https://www.sos.state.co.us/pubs/elections/VotingSystems/sys...
If you're curious about the DVS topology: https://www.sos.state.co.us/pubs/elections/VotingSystems/sys...
A vulnerability in the FTP software, which I don't believe you've provided any proof was actually exploited in the wild during the elections, makes 0 difference to official results.
No one is saying they were hacked this way but it definitely can be used as fodder to bolster election fraud claims (real or imagined.)