For instance, greater than 97% of the world's climate scientists accept this "temperature trend garbage" as completely valid. And I'm quite certain they understand how it is processed better than you or I and, apparently, better than your complainant.
B.t.w. For your information this "complainant" who according to you does not understand how the data is processed is the head of Dendroclimatology,
climate scenario development, data manipulation and visualisation, programming at the CRU East Anglia:
Mr Ian (Harry) Harris
Dendroclimatology, climate scenario development, data manipulation and visualisation, programming.
I`m quite certain he is not as dumb as you are but you could send an email to see if they could use an "expert" like you