“Words have meaning and you’re using the wrong ones” is a much more cogent argument than “I don’t understand what you mean when you say 6e.” Everyone dialed in enough to D&D to be discussing it on ENWorld understands what someone means when they say “6e.” We may take issue with their choice to call it that, but let’s at least express that issue directly instead of playing coy about it.
The claim isn’t that the 2014 rules were simulations of anything. It’s that the 2024 rules are more casual about using different rules for the same game object in different contexts than the 2014 rules were. In the 2014 rules, a longsword always did 1d8 damage in one hand and 1d10 damage in two hands, regardless of context. In the 2024 rules, a longsword still does 1d8 damage in one hand and 1d10 damage in two hands in the context of a PC wielding it. However, some monster stat blocks describe monsters using longswords but have them dealing a different amount of damage. This isn’t a problem, necessarily, but it is an observably different design choice.