That still does not make any sense. At all.
If you slow down testing. As in, there are fewer tests being done every day, less people get tested.
If fewer people get tested each day then the people who are positive and couldn't get a test continue to infect more people.
Thus creating more and more infected people.
And you don't know that. Because you have cut the number of tests.
Your infection rate is growing exponentially and you don't know that. You can't tell because you're cutting the number of tests down.
On the flip side, if you increase testing, you'll know more. You'll know how many people are infected. YOu'll be able to tell when your % posititive starts to drop.
which is the key indicator.
When you're doing 100,000 tests a day and the number of positives starts to go down, that's when you KNOW it's going away.