Thank you all for answers.
I was considering to relate my question to the "weird" effect of contamination on V1 speed. I called it "weird" because the contamination is considered to have additional decelerative effect if decision is "Stop" at V1 or difficulty in acceleration if decision is "Continue" at V1. These are just oppsoite effects which are considered in Wet/slippery runway at which reduced thrust can be done. After all these, I thought this "weirdness" somehow may be preventing reduced thrust method to be used because of Vmcg. But now I understand no conculusion of my thoughts.
Thank you again.