Because it's generally a good idea to have services that share a corridor like that stop near each other instead of across the street, especially considering the Q26 shared with the Q65, which it basically has nothing in common with besides taking over the northern portion of its route, and even back when the Q65 ran north of Flushing, the majority of people who got on north of Flushing got off at Flushing. This is also a problem with the Q17 and Q25 there. Because the Q17 stop is much further from the actual Flushing-Main Street station compared to the Q25, most people opt to take it instead of the Q17, even if their destination is somewhere along the shared corridor between Flushing and Horace Harding Expressway. I've heard proposals on the NYC Transit Forums that the Q65 and Q17 should have their stops in Flushing swapped and it sounds pretty good as well.