That's a difficult thing to answer. However the more important problem is loss of data whenever your DB isn't available due to downtime, upgrade etc. It depends how important data loss is for your user case. I'm a data completist but I'm in therapy for it ;)
It's definitely worth playing with, and trivially easy to spin up. Other self-hosted options aren't anything like as simple to get up and running.
Well, but the point was MySQL + Piwik "does not scale" and that it's "expensive" besides, which doesn't comport with my experience and sounds like received wisdom.
It's definitely worth playing with, and trivially easy to spin up. Other self-hosted options aren't anything like as simple to get up and running.