Oh yes, hence the smilies at the end. You would have expected Ney and Soult to know Wellington by that point. That were the only people present during that campaign that had actually faced Wellington. Soult actually performed quite adequately against Wellington in the Toulouse campaign.Its an interesting theory, but since he was later executed not likely!
Tbh I think the criticism for being hesitant at Quatre Bras could perhaps have led to his misguided aggression at Waterloo.
But in all honesty he should never have been put in such a position in the first place. Personally I think Napoleon gave him the role because he had switched sides back to Napoleon. I think at this stage Napileon was more concerned about loyalty than ability.