I apologise if this has already been voiced but personally I feel the loss of the option to export a presentation (in Presentations 2021) to a "Show to Go" is distinctly a retrograde step for those of us using Presentations (for over 20 years) and regularly moving to locations where the full software is not available and having the .exe of the presentation provided an excellent solution rather than having to lug ones laptop around. My option now appears to be to create the presentation in 2021 and then import into Presentation 7 or 8 and create the "Show to Go" on that platform.
One could publish to HTML but i prefer either .exe or video files.