> For example, MongoDB used to be AGPL and Grafana is AGPL. It shows that AGPL doesn’t affect usage or popularity.

I take some issue with this characterization. Let's look at Grafana in particular. Grafana was not always AGPL, and much of its popularity came before the license change. I've been in multiple organizations who only purchased a license for Grafana to avoid the AGPL terms because it had gained traction already in the organization and switching away would have been more costly, and AGPL software is still outright banned.

That Grafana is still popular does not show that the AGPL doesn't impact usage or popularity, only that Grafana is still popular.