That is an upstream issue with the Adwaita icon theme. It dropped the applications-multimedia icon. I addressed it in the update. Essentially edit
/usr/local/share/desktop-directories/AudioVideo.directory
Code:
Icon[sv]=applications-multimedia
Icon[tr]=applications-multimedia
Icon[vi]=applications-multimedia
Icon=applications-multimedia
Type=Directory
to
Code:
Icon[sv]=applications-multimedia
Icon[tr]=applications-multimedia
Icon[vi]=applications-multimedia
Icon=video-x-generic
Type=Directory
As far as BareGUI, I always felt uneasy about choosing applications for OpenBSD users and wanted to provide a "Bare" framework that made it easy for users to customize.
You can still run SimpleDE in 6.6. The only issue is you will have to edit the menus for any new/alternative applications you install.