Whilst some gauges are not as accurate as others they do give some information and should not be ignored
I would agree, which is why I fly only my own plane nowadays
The ones I trained in never had usable fuel gauges.
I recall when I walked up to the CFI once and said that the fuel gauges don't seem to indicate anything useful. He looked at me very seriously, walked up to one of his instructors, and went through a charade of very formally asking him for a report on the fuel gauges. Obviously the FI(R) replied that he was unaware of any problems
Only a little later did I realise the joke which he pulled.