Gas Recirculation Valve (egr Valve) problems of the 2019 Mazda CX9

While driving on highway I get a message on my dashboard "high engine temperature/engine output may be limited" warning message. I pullover and see that the cooland is low. I wait for thee car to cool down and fill with coolant. After 5 minutes of driving, get the same message on dash. I had car towed to martin Mazda in delaware. Diagnosis is that I need a new egr valve and new engine $13,000. How coincidental it has the same symptoms as described in TSB and manifests itself differently and not covered? I even had my vehicle towed to john kennedy Mazda in pennsylvania and diagnosis is coolant is leaking into my engine. Too much of a coincidence and I am not the only Mazda owner experiencing this. My car is part of the VIN for the Mazda powertrain warranty extension technical service bulletin 01-002/23 (Feb. 10, 2023). The Mazda techs are trained to not diagnose as such not to be covered under the warranty due to the enormous economic strain it will put on Mazda corporation. Mazda gets around the class action suits by offering the warranty extension but not honoring it. Mazda needs to own up to their mistake and turn this warranty extenions TSB into an actual recall. Will it take an actual stall of the Mazda affected vehicle on the highway causing deaths for some corrective action to be taken?.