My book reads
Sulphonation will be the most effected electrophilic aromatic substitution reaction when benzene is replaced by hexadeutrobenzene.
I am not able to figure out how. All EAS reactions proceed by formation of an arenium ion and then the loss of an $H^+$ ion to regain aromaticity so all of them should be equally effected ( textbook does not mention how they are effected). I feel the only effect should be due to difference in bond enthalpies of $C-D$ bond and $ C-H$ bond.
I came across this reaction mechanism from chemlibretexts: The hydrogen released is taken up by the $-SO_3H^-$
Can someone explain how and in what ways the replacement of hydrogen by deuterium effects the reaction ?