Your original response was to state that the seats being released closer to the time was "Not true" and there was "NOTHING" available in September.

It turns out your statement was 'not true', seats are clearly being released 3-4 days out

You can not expect to find prime seats, at a prime time, at the most common time to book, it's just not going to happen. If you want to get value from your Avios, you need to plan in advance, or be hugely flexible

You're not going to get 100,000 miles for free from Chase and then be able to use them as and when you want, anyone who thinks that is in cloud cookoo land