Correction:
1) Your 2013 C-Max never had the 2.5 Ford (Mazda derivative) engine option we are talking about. You had a completely different Ford 2.0L engine in that vehicle.
2) My 2010 Ford Fusion Hybrid had just under 210,000 miles on her when we traded it in. Although we had the early coil issue, you mentioned, it showed no signs of issues at 210,000. When you consider that fact that numerous NYC Ford Escape Hybrid taxis racked up 500-600 thousand miles on them - I’d say that is pretty “proven.” Bulletproof would be a better term for that 2.5L engine.
Update: I currently have that same engine in my 2022 Ford Maverick Lariat. Long term gas

️ mileage is in the 46-48 range (70% city driving).