Does it bog down with more than 5? For it to be a serious alternative, it needs to support meetings with dozens of participants (even if it requires beefy hardware).
It fares pretty good in my opinion, I was taking Japanese classes before this COVID situation and they implemented remote classes using a self-hosted jitsi instace, we're 15 people in the jitsi room, we have the class for 5 hours and it's pretty stable, I imagine there are more rooms working simultaneously too, since we were not the only class taking place before this.
Unfortunately yes, I mean, the software allows for thousands of participants but the stream would be terrible. For 5-50 people, use BigBlueButton instead.