To conclude that a lot of covid victims would have died anyway, you would have to show that the total number of deaths is up less than the number of covid deaths.
In fact, we see the exact opposite: total daily deaths has increased by more than the known covid deaths. This appears to be partly from missing covid deaths (e.g. from people dying at home), and partly from heart attack and stroke patients delaying trips to the ER from fear of covid.
But wait, you mentioned that "the timeline is different." Well of course, we're all going to die eventually. That doesn't mean we should just lay down and die today.
Epidemiologists strongly disagree with you about delay and testing. If you lock down enough so the replication rate goes below one, you can get the virus down to manageable numbers. If you cautiously open with lots of testing, you can isolate the cases that show up, and tests all their contacts.
On the other hand if you shut down without bothering to build your test and trace infrastructure, then you're right, the delay didn't help at all, because you were incompetent.
The idea that we can just open up and people will happily go back to work and shopping while the bodies pile up is unrealistic, to put it mildly. We're actually extending the economic crisis, not shortening it.