I get what you’re saying but the forgetful customer is explicitly what they said they want, which is dumb any way you look at it.

I don't disagree on that.

Many times you’re forced into signing up for subscription, or coerced under the guise of a free trial. Now this wouldn’t be as bad if they came back and were like, “hey we see you haven’t used our service in a while, do you still need it?”

Maybe, but at this point I doubt that a forgetful customer would pay attention to it. What would really make the difference would be to renew the subscription explicitly. This way you could be forced to sign for a false free trial, but you would also need to confirm a subsequent subscription.

rather than just leeching money from the user. The system is designed to purposely allow the user to make these errors and that’s wrong any way you want to shape it.

Yes, this is another way to see it. But the solution in my opinion is not to eliminate the concept of subscriptions. The solution is to educate the customer.