The truly, mildly infuriating thing is that they will most likely charge you as soon as the trial ends unless you cancel.

As someone who already likes the product: The trial is just a bonus - you get that time for free.

As someone who actively dislikes the product: You’ll likely only use the trial if it’s absolutely necessary.

As someone who is skeptical of the product: You may want to use the trial to help decide whether you like the product.

As someone who is frugal: You would not want to get charged for something unnecessarily.

If I’m skeptical and frugal, I’d be wary of starting a trial which automatically charges me at the end. I’d be more likely to seek alternatives. Apple may not target this demographic to begin with so the point could be moot with this example… but regardless, the fact that many “free” trials do this is probably mildly infuriating to anyone who is skeptical and frugal.

Additionally, when I do find a true free trial, I would be inclined to take that as a sign that the product speaks for itself and that I’m not going to get ripped off.