Hello @charles.simard,
Scripting capabilities must be enabled only for saving the first custom form to the site. Further savings at the same site do not require scripting capabilities. We will soon remove the dependency on scripting capabilities.
As I know, there are no plans to remove the option to enable scripting capabilities on the SharePoint sites.You can still enable scripting capabilities using a PowerShell command, or allow Plumsail Forms App to do that for you.