IYUM that you've asserted it for years without argument, but rarely managed to persuade anyone. Try arguing with arguments instead of asserting. Something like

IYUM that you've asserted it for years without argument, but rarely managed to persuade anyone. Try arguing with arguments instead of asserting. Something like "Tokenization superficially appears to be a boost just like lexers appear to help parsers on first glance, but on closer reflection it's a net negative because [insert arguments here]".