If true, it definitely feels clunky and an oversight in the transition to 2.0- hopefully faqd and reworded . I feel the spirit of the rule is can’t charge or move but can pile in. Obviously a discussion to be had with the opponent.
Different purposes. Crossbows no longer get the extra shot until there’s 20 of them, archers are great screens and board denial chaff, handgunners get the long rifle and rend, so damage wise probably the gunners