First of all, only 1% of gas cars make it to 200k miles. So even if we accept your contention about battery loss, 99% of EVs will last as long as gas cars.
Second, EVs lose experience about 10% capacity loss per 100k miles. Some a little more, some a little less. So at 200k miles they’ll still have somewhere around 80% of their initial range. Your 20% estimate is wrong, except maybe for Nissan Leaf which had poor heat management. My Chevy bolt had 50k miles on it with no appreciable capacity loss.
Third, battery replacement on a tesla is around $13k which is not 5-10 times the cost of the car. Battery prices are also decreasing as more of them are made, so the cost will be lower in the future.
I don’t expect any of this will change your mind, since it’s based on Fox News talking points, but I don’t want other people misled.