Oh, I should have been able to figure this out with the video only. I just missed it. I haven't been using Inkscape as much for my personal use, as I usually do, or I would have caught the problem right away.
The problem is the that when you use Object to path, to convert text to path, it puts the text in a group. So you either need to ungroup the text before you start the path operation. Or instead of using Path menu > Object to path, you can use Path menu > Union, on the text alone, and that converts it to path without putting it in a group. I know it's not a logical thought that that's what would happen. It's just one of those Inkscape secrets.
There are several things I look at when I examine an SVG file for someone. In this case, the video was obscuring the status bar, and I couldn't read it during the video. I needed to see the actual SVG file, so I could see the status bar clearly.
Somtimes I use the XML Editor, to look at the code which is created by Inkscape automatically. And sometimes I need the SVG file to be able to see the Fill and Stroke dialog. Sometimes I need to see the Layers dialog.
Edit
yemanjalisa posted while I was typing
Welcome to the forum, yemanjalisa. Unfortunately, you've joined this forum on its very last day. Later today, we will begin the transition to using the new forum, on the Inkscape website. I'll edit the red text on the forum index page, with a link to the new forum (although you might already know where it is) as soon as I block new messages here.