LOL at OP, what utter rubbish you talk.
not only does it say normal tariff will remain, this is a great thing and needs to happen, and us customers can make a huge saving by changing some extremely basic habits that take no effort or thought and is something we are currently blocked out from by the government, because they deem us to stupid to understand it.
as Evs get more popular, you will really like extra cheap night rates to charge that currently aren't available to consumers. Smart appliances live freezers can also switch off at peak times and have no effect on the freezers performance. This also means that we need less peak power plants which cost an insane amount of money and maybe on fired up a few hours a year. Essentially everything you wrote in OP is rubbish and lacks understanding.