and just not leave everything up to Google to decide in the future IMHO.
EDIT: reading farther down, I see the answer to the latter half: https://news.ycombinator.com/item?id=18540470
For me the issue is time. Adding the annotation took 1-2 mins. Downloading the video on youtube (since I no longer have the source material), then loading that into some video editor, adding the annotations, rendering it, and re-uploading it would easily take 1hr per video. So IMO it's not really a good solution. I don't have the time.
Personally I think they should keep the annotations and keep the source video. When you change the annotations they can re-render the video on their end. Keep the 1-2 minute workflow
There is much more to the browser than rendering engine.
If Apple allowed browser competition then Firefox and Chrome would likely support fullscreen mode (like they both do on Android) and Apple would effectively be pushed to add it to mobile Safari or lose market share.
On the other hand I wish Google would give me the option to bake in the annotations if they're going to remove them. I have a few instructional videos with corrections in the annotations. Those will be gone and the videos will end up being wrong.