No I think it got banned because one, the glitch with the Lockdown mags and 2, it's even more cancerous to vs than someone using a rocket launcher as the rockets travel faster and it's harder to see the rocket. And it does the same damage to players as the rocket
I actually think its harder to hit players in an open area with the Lancer considering the missile drop is hard to see/estimate. I also already mentioned that the lockdown mag glitch was fixed, I just think the Lancer as a whole adds variety, Some kid cant just pick it up and hit someone long ranged first shot but that's just my opinion.