At the moment it’s a production image.
Is plymouthd available only on a production image?
I found plymouthd and I killed it. It doesn’t seem to come back. Is this intended?
Also if killing this service is the solution, how can we disable it permanently? I’m also a bit curious what it does. I found this: https://github.com/balena-os/meta-balena/issues/1403
Is it displaying the splash screen? 
Edit: I tested this and it works perfectly now! How can we disable plymouthd in config?