Not necessarily. I say there may be some issues, but it's not important for the existence of LENR. Everyone makes some error through their careers, and this is not their important discovery. There is another phenomenon that interests me, which is the heat bursts as I explained, and which is the Mystery.
In that case you again have not adequate knowledge of the history.
Einstein removed the constant from his equations in 1931, and called the constant his "biggest blunder". But his real blunder was to remove it in the first place, since it was reintroduced in 1998, long after Einsteins death.
The ideal would be to recognize and find error asap, but that does not always occur, for many reasons, not because of dishonesty, but natural reasons, just as with Einsteins blunder.
Whether the universe is described by equations that need a cosmological constant or not is an open question. Still. There are proposals for dark mass/energy resolution that require one - and others that don't.
Scientists in general follow Einstein and put one in with great unhappiness if it allows an otherwise good theory to track experimental evidence.
I'd agree that scientists make stupid errors and do not always recognise them. It is viewed as very poor form if as with the Lugano authors they are notified of an error and refuse to correct it or defend it.