It is so annoying that thing popup every time when I switch project.
I believe it make sense to add a setting in the Preference to check show or hide the startup splash screen. Please add it in 3.3.
If you pull apart the exe or application, maybe. Probs easier to do on a mac, actually. I recall managing to be able to do that sort of stuff in mac os 10.3... good times.
I changed mine like this.
you can replace original image resource with empty PNG to "remove" splash screen.