We have been using them since last Fall or so - we've had about 10 or 15 negatives . . . because we didn't have Covid.
We also had three positives (and then a few follow ups to see if we were still testing positive, that were also positive) . . . because we did have Covid.
Yep, we've used a number of home tests recently and they've all been accurate as far as we can see. When I recently took my kids to visit my dad none of us were sick but we all took tests to confirm we were negative.
Meanwhile, when my wife developed symptoms last week she took a test that confirmed she was positive, as did subsequent retests later in the week. She finally tested negative yesterday, seven days after her first symptoms.