People can criticize GG and they have their reason. It is amplified by his outspokenness, his past as BJP MP etc... hence plenty of SM support for axing him.
BUT.. why is there no criticism for shocking shot selections? These are not newbies, especially in home conditions. Pant, Jurel, Sai all got out playing horrendous shots in both matches which opened the floodgates. 246/6 to 489.. 70 0dd for 5 to 154, twice SA escaped when we should've pressed home the advantage. Hare brained selections definitely aggravated the situation. But GG can't be blamed alone.