People's threat model isn't always some malicious hacker with access to their machines. The vast majority of the time people simply want to be sure that the video conferencing software they deliberately installed on their non-compromised machine isn't accidentally transmitting the sound of them eating lunch to the call they deliberately joined. I'm not sure pushing back on tips about how they can reasonably accomplish that because "software solutions can be hacked!" is particularly helpful.
Because it seems every day I read about some software hack draining away all the information on a "secure" computer. "Secure" software is a fantasy. Hardware switches are secure.