Janos Bauer wrote:
So far you seemed to be the most competent in the GFAC team,

It has nothing to do with competence. I agree with some of your
opinions, others do not.

who else think different than you and what are the reasons
behind such an opinion?

Tradition is a big factor. The perceived (but not adequately studied,
in my opinion) inaccuracy of GPS altitude is another.

Can we involve him/her in this open discussion?
Maybe that member should visit an average club and see how these
barographs and barograms are treated...

It doesn't matter how they are treated, as long as they can be
successfully calibrated within the set interval. The corrected pressure
altitudes taken from a barogram may be off by a hundred feet or so, but
they still provide a more accurate measurement of the precise form of
altitude required by the current IGC rules, than any COTS GPS.

Marc