I'm assuming the recent Zoom fiasco has pushed you to this, but I'm not so sure it's is an approach that's going to serve you well. It's quite likely to make you look difficult to work with in the eyes of some.
Here's an example: I hate WebEx. I mean, REALLY hate WebEx. It's a totally, utterly, inexusably bad, piece of turdware. There's always some drama with AV or somebody not being able to get into the call, which without fail wastes at least 5 minutes at the beginning of the meeting. It also obnoxiously announces latecomers, interrupting whatever discussion is going on. I hate it. I've had to deal with the damn cursed thing wasting so much of mine, and others, time over the years that I consider it utterly beyond the pale. More than this, call quality is often marginal at best, and it seems to deal with choppy connections much worse than many of the other options.
But guess what?
Some people have WebEx mandated as their corporate standard so they have to use it. And others aren't that computer savvy but they have WebEx installed and know how to use it. In every other case I just don't want the first substantive conversation I have with somebody be about how I refuse to use WebEx.
So sometimes I use WebEx too.
The point is this: pick your battles. From time to time you're going to deal with clients and customers whom you have to have difficult conversations with. Do you really want one of those conversations, and likely one of the first conversations you have, to be about videoconferencing software?
Do you really want your position on videoconferencing software to set the tone of your ongoing relationship?