"Yes. They are essentially a bunch of twits.
All types of stone were actually used to make tools. I thought that was accepted and understood."

That's a bit harsh. They're there to build up a national database of artefacts for research purposes. It doesn't include an "iffy" category. What would you have them do, stick their neck out and say Flintov was bringing them a new type of artefact for which no precedent can be shown? I haven't seen anyone here saying yes, definitely, the examples he has posted are manmade so why should the FLOs?