Thanks for the perspective. Sounds like a legally motivated move, rather than a realistic hazard. I remember many years back being surprised//shocked at large signs on the entrance doors to supermarkets in the US warning that diet-colas contained some sweetener that had been shown to cause cancerous growths in laboratory animals.
I think it's great that re-purposed parts of old aircraft are being offered for sale to the general public. Gauges and so on are for the aviation enthusiasts, or aviation themed establishments in general.