TGO is the actual mission. The lander's just a technology demo --- important for the next ExoMars mission rover, but it was only going to last a few days anyway.
Schiaparelli being lost is a 'well, go figure' moment; TGO being lost is an utter disaster.
Unfortunately landers are sexy, while science-rich orbiting probes aren't, so it's Schiaparelli that's getting all the press.