You have pointed out the mist vital area to which any beginners need gather knowledge of the use of someone wallet is very dangerous as one can get it's wallet mostly have his self custodian wallet his fully in control and only need to be conscious of keep his details safe and lossing any details will also leads to loss of asset. It's clear that holding of one asset is not determine by the years if experience but ability to afford the asset or purchase it , even a day old experience person and buy and hold Bitcoin or any other asset provided you have your self custodian wallet to store it and keep your details properly , beaconing on your deep answer it's also Worthy to note that any asset hold Bitcoin or others need be careful on how private information regarding to it's holding is share to avoid scam including losses due to misplace of details of the wallet or account.