There is however a staggering difference between companies. Compare cooling in Ford Mustang Mach-E and Tesla Model Y.
Tesla just brutally crashes Ford in how much they are able to reduce number of parts, especially hoses and hose connectors. Tesla has something like 3x less hoses, 3x less parts and half the mass of the coolant in the loop (22kg vs 9 kg).
Maybe part of what you are seeing is inexperience and incompetence of ICE car manufacturers.
There are also other things that legacy car manufacturers are not willing to risk like megacasting. Something like 50 parts reduction in one cast, and good chunk of the factory floor for Tesla. And apparently the idea was out there long before Tesla but nobody tried it. While Musk loves taking financial risks if they can deliver significant engineering benefits.
Not to mention that while Tesla may be not great at software engineering, ICE car companies and their supply chains are just ridiculously bad at it.
That’s a good point. You aren’t going to have an NVLD leak in an EV.
But… what people aren’t realizing is how much is added to EVs that replaces all this.
How many people realize there is a heating and cooling system for the batteries? Pumps, radiators, heating elements, all sorts of modules for each component, the entire generator system. And it’s all brand new.