For security reasons I recommend to avoid smplayer (and smtube).
A less featureful alternative is gnome-mpv.
so, do you suggest to drop them both from archive (its not like we don't have plenty of other apps for such use case) and improvement in security and freedom of archive might be enough big to simply remove them from pureos archive (we can always change that in future if it changes)
Yes, I recommend to drop smplayer and smtube from PureOS.
If the mechanism to drop has the ability to include comments for those wondering why the Debian package is missing from PureOS, then I suggest mentioning gnome-mpv and minitube.