Comment by InsideOutSanta

The intelligence of stalkers is an academic subject. Findings are fairly consistent (e.g., their mean IQ is about 10 points below average).

It's absolutely true that there are many ways to stalk somebody, most of them much better than an AirTag. It's just that the people who decide it is a good idea to stalk somebody usually aren't the brightest, so making the lowest-effort way to stalk people a bit harder will likely stop many of them.