My questions is that ' is there any possibility that some point in time in future BTC community might decide something which can retrieve this lost BTCs?
Nope, 2nd post of this thread does explain and this comes from the creator itself which means its the absolute rule when it comes or in talks about lost Bitcoins, thats why you should really be careful
on storing up your coins and never ever tend to forget your private keys or seeds which could really be the thing needed on accessing your wallet.
There's no way that community could make out retrieval and if you do tend to understand the basic concept of Bitcoin itself then you would clearly understands.