CAP413 is quite clear. Pilots who
wish to confirm their position may request a ‘Training Fix’
Dead reckoning - flying a heading and time in uncertain winds will by its definition result in an uncertain position, but this uncertainty does not mean you are lost. Pilotage is used to confirm your position at frequent intervals and so keep this uncertainty manageable. CAP413 quite clearly states that Training Fixes can also be used to confirm position.
I don't think anyone is advocating using a Training Fix often or when lost or lying on the radio but I don't think it is right to criticise pilots for using a facility as sanctioned in official documents.
If there is a problem then criticism should be directed at these official documents, not at those following them.