The claim that the CEO is disputing is that the Dominion machines are operated from a central location which can monitor and control the outcome of any action t

The claim that the CEO is disputing is that the Dominion machines are operated from a central location which can monitor and control the outcome of any action taken with one of their machines. The "technology" is specifically referring to the Dominion system, not "technology" in general. If the Dominion system does not include remote access, if it doesn't include remote monitoring and if it doesn't include remote vote management then "technologically impossible" is a fair statement. They are not arguing that it is impossible for such a system to ever be built, they're arguing that their system is not built that way. Voting machines are audited and have a chain of custody, it would be very difficult to argue that "someone could hack all the machines and install this capability" fits within the realm of possibility.