I'm not a fan of subscription models in general myself and argued against it in other threads, but Scirra are too far into things to change from the subscription model to a buy once model at this point, and they have some understandable reasons for wanting a more stable income which should also benefit the users of Construct 3.
The Scirra team have heard all the arguments against subscriptions and have at least given consideration to some of the suggestions to make the subscription model more palatable.
Tom has already stated elsewhere that they are considering and discussing internally the suggestions of monthly subscriptions or pausing subscriptions, but that they might not come into affect until after the first year.
Ashley has also stated elsewhere that they are looking at the possibility of allowing people with lapsed subscriptions to modify and re-export previously exported projects - basically allowing users to maintain their apps without requiring re-subscription.
Now it's a matter of waiting to see how things work out, or if you can't do that then moving on to other software.
On a side note, I also think the Scirra staff have been quite lenient in how long they left the other threads open given some of the harsh comments and personal attacks in them.