Smartworld One DXP's possession dates are pure fiction.

Is Smartworld One DXP's projected possession timeline just a marketing fantasy? I'm currently in a 2BHK in Sector 65, thinking of upgrading to a 3BHK there. My home loan is already running, so another long wait for possession would be a big problem. Everyone talks about the fancy amenities and location, but no one really discusses the builder's actual track record for delivery. Are we just supposed to believe the brochure dates? Is the price jump from a 2BHK to a 3BHK at DXP worth the potential years of delay? Honestly, I'm not sure. Has anyone had a smooth possession experience with them before? Change my mind if you think their timelines are legit.