Besides, cultural and temporal contamination aren’t the only things wrong with that film.
Picard was Worf’s cha’DIch and would be well aware that calling Worf a coward is a monumentally stupid idea; projectile weapons should either always work against Borg or never work against Borg—the Borg shouldn’t have to adjust their shields to now block bullets or shrapnel or whatever; killing the queen shouldn’t kill all the Borg drones; the Enterprise’s deflector is destroyed, so they shouldn’t be able to use it to return to the future; and the Enterprise-E is a Sovereign class ship, specifically designed to combat the Borg, so giving command of it to a captain they don’t trust in a fight against the Borg is foolish either way you slice it.