

Yes. What’s also true is that sometimes they must be. You will disagree until you find the exception.
No, there should never be any reason to connect these versions to the internet.
If you are talking about legacy software in a corporate setting, then a vm should do the trick 99% of the time. If that legacy software needs an internet connection (which is already questionable), then you bridge only the specific port it needs to the connected interface. If that doesn’t work either, then you get a separate PC explicitly for that software and disallow pretty much all other connections.
If you are talking about private use, then the only thing keeping you on a windows version older than 10 is your unwillingness to upgrade. Its understandable, but it doesn’t change the fact that these versions have massive security holes and shouldn’t be used anymore.

The main issue with your second arguments and the anti EV sentiment in general is that most people seem to think you have to fill them up like gasolin cars.
Everyone that lives in a more rural area can simply plug them in at home and charge overnight. And I don’t mean with a fancy private chraging point, a simple 3 phase AC plug will fill your car to 100% in about 8 hours. Even if you only have access to a 230V AC socket, you can still get ~4% per hour, which nets you 50% charge over night, in other words about 150-200km. The power grid doesn’t care much since the average load in the night is usually a lot lower.
For more urban areas there is a need for more infrastructure, yes, but even then you don’t really need superchargers. 11/22kW chargers in public and private parking lots can be built in bulk, are a lot cheaper and are enough for 90% of what the people need.
The only people that need superchargers are:
People that live and work in high population cities. Most of what they drive with their cars could have been done with public transport if they live and work in the same city, so not too much sympathy from me here. As for grocery shopping and the like, a huge array of 11kW chargers at the supermarket would solve that problem since most people in that area would need to charge like once a week.
People that drive 200+km a day. Sure it happens, probably more than I think, but in overall numbers they only constitute a few percent of the cars on the road at any given time.