I've been listening to the show for 14 years at this point so it is very cool that 2 games I've worked on have both been discussed on RFN this year! (Balatro is the other one)
Glad Gui has been enjoying Golden Idol - the save bug is a real black mark on that Switch version. We have tried fixing it so many times - even hiring other people to come in and take a look but nobody was able to - this process is exacerbated by Nintendo's patching process which means you have to wait multiple weeks just to test to see if it is fixed or not.
That said we have a longer term solution to the issue which should hopefully be coming soon - has just take a long time to figure out.
So yeah, I'd advise against the Switch version for the moment until the issue is resolved.