Only few points here are valid.
Most of them are not lost just someone else have them.
Has been corrected now. Check above.
Ways Bitcoin can be lost
1. Forgotting the encrypted password used2. Seed phrase accessed by attackers
3. Malware attack like trojan and keyloggers etc
4. Through phishing sites
5. Through fake exchanges
6. Through fake wallets.
7. Through lost passphrase8. Hacked exchanges
9. Lost to cloud mining sites
10. Lost to Ponzi scheme
11. Lost through fake giveaways and airdrops
12. Lost through misplaced seed phrase, private key or seed etc.There are bitcoin that has being lost and not accessible again through the following bolded above.
1. Forgotting the encrypted password used7. Through lost passphrase12. Lost through misplaced seed phrase, private key or seed etc.