I would split digital privacy from the foss and Linux discussions. They attract the same people, but are fundamentally different topics.
It also means you could get deeper into the digital privacy topic which is more useful to most people.
For the digital privacy one, ask for a volunteer (or do you!) ahead of time and get them to do GDPR requests for apple, Google, Microsoft, Meta etc. sanitizer anything they want to hide, but do a demo of what big tech actually knows about them.
Then go though how to prevent that and have a discussion on the pros and cons of that data collection. (Eg I don't care about Google data tracking as I find the Google location history really useful)