This is completely unwarranted fatalism. Taiwan and Singapore bent the curve, and Korea is doing it now as well. Learn from them and implement! Really don't understand this logic at all - containment is possible.
Preparing a country for this potential outcome is a good thing. If it didn't end up at 60-70%, it will be in part because of a very strong response.
The curve is still very much bent when we look at how early this started in the country and it will continue to be flatter than in any place not putting distancing and testing in place on time
"South Korea on Wednesday reported 242 additional coronavirus cases, almost double the number of new cases reported on Tuesday, as the emergence of a new outbreak in Seoul worries officials." from [1]
[1] https://www.ft.com/content/986b533f-1d3e-3920-ae80-da8dcd8af...