Yep, that pink jelly is just cooked on/dried OEM coolant. It could be a loose hose clamp or weeping. Coolant weeping is relatively "normal" and might be a warranty claim. I wasn't successful in getting mine fixed, but over time (2 years, 12000 miles), it seemed to have fixed itself. This is the first time I've heard about these kits to fix the issue - not saying it doesn't exist, but the previous owner might be saying things to get you off his case. Regardless, coolant leaking also does not result in the orange error light, there has to be something else going on.
Sounds like you were pawned off a potentially bad bike, especially since the previous owner didn't tell you these things upfront. Tough to say whether or not this is a "Ducati" issue and you potentially could have similar issues with literally any other manufacturer. Don't be the minority that makes poor reliability and Ducati synonymous to the masses, its certainly not the case in the current generation of Ducatis.
2016 AWS 959 Panigale - Sato Racing Sliders | T-Rex Axle Sliders | Dieci83 Radiator Guards | Techspec Tankpads | NRC FEK | NRC Mirror Block Offs | CRG Arrow Mirror | TWM Brake Lever Guard | Ducabike Gen 1 Rearsets
2009 Red Ninja 250R - Totsubo Exhaust | Woodcraft Rearsets | RaceTech Cartridge Emulators | Ground Off Kickstand Mount | Pirelli SuperCorsa SC1/SC2 | Attack Race Bodies Fairings