Does anyone use SharePoint Framework for their Captivate projects?

After years of being able to run Captivate content on SharePoint Online (we have to rename index.html to index.aspx, and then everything used to run perfectly), Microsoft is tightening down on script files.

Now things don't run perfectly, resulting in the browser either downloading the .aspx file, or a white screen where nothing loads.

At this time, we've got a workaround, but Microsoft will be tightening down even more in November, and there are a lot of eLearning developers out there saying they're going to move to SharePoint Framework (SPFx) in order to be able to continue delivering their eLearning on SharePoint Online.

I'm curious if anyone here has experience using SPFx and if it works reliably and consistently with eLearning?