I see you wrote that you’re thinking about making it FOSS. What’s the alternative? Paid software/non-free license + Open Source or proprietary? If you’re low on time and don’t have the capacity to maintain (bugfixes/reports from users) yourself then I say proprietary is a no-go. Then about the license - IMO (though I don’t have hard data on that on hand) people much more likely contribute to FOSS as opposed to locked in license + open source model.

What…the… Why?

Sure, which side is default (or other small nuisances) might be preference, but if you take away the option to customize (which was once there) the critic is valid IMO.