As the article points out, the machine in the clip once hacked by Harri Hursti has not been used in over a decade.
Trump Supporters Are Pushing a Clip of a Voting Machine Being Hacked. It's Not What It Seems
https://www.wired.com/story/trump-supporters-hacking-voting-machine/
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Ultimately all computers can be hacked if you have access to them,
That's why access to the machines is tightly controlled and why Tina Peters is going to prison for shutting down cameras, providing passwords, and allowing Lauren Boebert's campaign manager to access them unsupervised.