You are correct that it is more complex, but I would argue at least in the prius’ case(which extends to most toyotas) The Hybrid system enhances longevity of the engine, costs less to maintain, better fuel economy and removes several issues with ICE cars. Has no starter and the A/C Pump and the water pump are electric, which the design is less prone to failure then a traditional Drivebelt driven design.
Prius’ have battery issues mainly due to lack of airflow to cool it. The 2nd and third gens have one vent on the passenger side to cool the battery. It gets clogged with debris and blocks air flow. Very rarely do any mechanic shops care to clean this out.
Despite the valid points you make on balance ICE is the better option by far if you want anything other than a commute/grocery car.
Engines without turbos will last a lot longer as well.