Except the prosection can then enter the positive test result into evidence and have the person testify that gave you the result that they told you (no, that's not hearsay).
There are a lot of people who have it, muddle through it, and don't get tested at all.
There are also lot of people working from home for companies where there is no requirement to vaccinate ( WFH so no need to submit anything), or where they are only required to "attest to having no symptoms" via an online form and then do a cursory temperature screen only upon needing to show up on site at the company. There's no test.
I'm glad some places are making the vaccination a requirement to be on site, or if not the vax, at least a recent test, like being tested 2x per week, and then as this goes on, start to charge them for the choice to be tested, unless there is a medical reason for an exemption.
If there is a medical reason, they should be required to show it.
There are those who have made the " two classes of society" or "slippery slope" argument.
This is a pandemic that kills people pretty quickly and especially now with the Delta and who knows what other variants, doesn't discriminate based on age or other factors. There needs to be some discriminating in order to save others.
If it "magically disappears" and the numbers go down a lot, we'll know it. Then, we'll go back to normal. Until then, this is stupid and embarrassing that we are in this situation as the first world country with the best vaccines readily available.