I'm a huge fan of your channel. You are blessed to have such tremendously beautiful landscapes to work with. Norway is high on my list of countries I need to visit someday.
Another strong reason to use written text in your videos, rather than spoken voice, is that there are hearing impaired people who would love to learn from your videos but are unable to hear what's being said.
I started posting YouTube videos in 2013 when I bought my first DJI Phantom. I posted quite a few instructional videos experimenting with the Phantom's various features.
youtube.com/playlist?list=PLLngMU-9AtNNzQuoLUBi1UIYDbDlw4mlJ
Then I was contacted by Mitch Bergsma, who has a famous Youtube channel promoting GoPro products.
www.youtube.com/user/micbergsma
Mitch had recently bought his own DJI Phantom and was watching my videos. But Mitch is deaf and couldn't understand anything I was saying in my videos. Until he contacted me it had never even occurred to me that there were people watching my videos who couldn't hear what I was saying. It's something to think about. I know there's at least one other very active member right here on this Mavic Forum who is also hearing impaired.
Youtube is able to automatically generate Closed Caption subtitles, but if you're not speaking clearly, or there's any sort of background noise (like buzzing propellers), those auto-generated captions are often hopelessly unintelligible. I tried creating my own SRT subtitle files uploading them to YouTube, but it's a really tedious process trying to synchronize the timing of the text to what's going on in the videos.
It's so much easier to just add text title overlays directly into the video at key points (as you did in your video above). Some people are very photogenic and are at ease talking on camera, others maybe not so much. Some say, um, ah, or like, too often. That's just distracting.
I find brief text titles are much more effective.