Ah, maybe you are right with the haptic feedback... I always assumed it was the actual clicking of the trackpad, like with a mouse. So, I guess I am in the wrong forum question. My issue with the Magic Trackpad 2 is basically that it does a silent click (you don't hear it anymore) and I want it to make it click when I press. But that doesn't work for a couple of months now.
I just tried mine now, and it seems to work fine.
When the trackpad is turned off, it feels like a solid surface; I can't click on it at all.
With it turned on, I can feel it click. In the "Trackpad" Preference pane, I can choose "Silent clicking" and "Force Click and haptic feedback"
If I enable Silent clicking, the clicks are quieter but I can still hear them. It seems to have no effect on the built-in trackpad, only on the external.
If I disable Force Click, I can still click on things, but if I hold down on a Finder icon, I don't get a pop-up window. This is on a 14" MBP with Monterey 12.1. I'm not sure, but maybe you also need to enable "Look up & data detectors." Last, the sound of the haptic click changes depending on the setting of the "Click" slider.
I hope you're getting the same results.