Seriously, get over yourself and grow up. You will always have to make compromises in the workplace, either on this or some other aspect of the environment because you are not the center of the universe. Ultimately the choice of video conferencing software used by your employer is so utterly trivial a matter when compared to basically every other aspect of your work life that rejecting a job based on this is idiotic. Especially given we're talking about teams which you will probably STILL have to interact with whenever you communicate with other organisations since it's one of the market leaders.