Indeed, that says Zoom is nonfree.
That text shows an example of a way of speaking I think we should try to avoid. The text says that "our" communications are done using these nonfree programs. That implies that "our" communications are done over nonfree video conferencing.
I hope we don't all do that. I at least don't do it. I have never used Zoom and never used Google Meet.
To say that "we" use the nonfree software suggests the idea that "It's inevitable, so we all surrender to it, of course." That encourages the readers to give in.
Let's tell people, instead, "We don't have to do this the unjust way. It is possible to resist!"
What do you think about changing
"In the pandemic time, our communications are being held via nonfree video conferencing software like Zoom, Google Meet etc.1 Hosting video conferencing via nonfree software gives away control of our communications."
to
"You should never use any nonfree software and that applies to video conferencing software too, such as Zoom, Google meet and Microsoft Teams etc. Any nonfree software is an injustice to the user because it does not give users freedom and takes away control of their own computing. Users do not control a nonfree software. Being nonfree software is enough reason to reject them. The initial injustice of proprietary software often leads to further injustices: malicious functionalities https://www.gnu.org/proprietary/. " ?
And then we can add in the next line "Video communications on Zoom are done via Zoom's central server which mistreats....." , the following "In addition to Zoom's client being nonfree" so that we get the line
"In addition to Zoom's client being nonfree, video communications on Zoom are done via Zoom's central server which mistreats....."
That would criticize Zoom's nonfree client.