Exactly, a supersaver ticket is not refundable if you miss the particular train tied to it in Geneva, even if it’s the airline’s fault. However should the first IC 1 train in your screenshot be delayed (= SBB’s fault) and you’re missing the connecting train in Berne, then the supersaver ticket would still be valid on the following scheduled Bern - Olten and Olten - Luzern services. (Ticket inspectors are able to verify any occurred train delays in Switzerland on their mobile device)
The SBB website is currently “under construction”, e.g. you can’t even buy a return ticket right now. So apparently another current bug (or feature?) is that the guest / logged out profile is set to “Half Fare Travelcard” under the discount cards selection. Therefore you see the 50% discounted prices which would only apply for HFT holders.
Note that your second “logged in” screenshot shows a saver day pass for 61.00. This one is different from the supersaver ticket. Although also not refundable, the saver day pass allows free travel on any train (or bus, tramways, etc) on that day in entire Switzerland, so even if using a different itinerary to Luzerm, e.g. via Interlaken - Meiringen (more scenic, but slower). Therefore a saver day pass makes perfect sense after an inbound flight, as opposed to a Supersaver ticket.
