If we want crypto currency to be a currency we have to keep spending right? But at the same time it's something worth keeping too since I do the same with my fiat in bank for more than 2years without touching it. Is it possible to say that Bitcoin in every wallets for the past 2years without moving are considered lost due to death or lost recovery keys? It's pretty hard to believe that anyone won't come back for their Bitcoin after 2years with no activities on the wallet.
Two years is too short a time, and there is no exact answer to this type of question. Since long-term bitcoin holdings have become commonplace these days, it's not uncommon for a wallet to go dormant for years. Very few people want to spend their bitcoin because everyone knows that the value of bitcoin will be very high in the future.
By the way, I don't like bitcoin being a currency because when it's a currency, it's stable and not volatile, I like bitcoin's volatility.