Best term for this by OP is, "Buy and forget"
By doing this, we are prone not to sell our holdings even when the price of Bitcoin goes down a roller coaster. And in this way also we are busy with other things so we can forget to check every time the market or the price of Bitcoin which will help us not to worry or panic just incase the price of Bitcoin dumps.
Before you forget, make sure to preserve your seed phrases properly so that you can forget today and smile tomorrow, failure to secure it, then you would forget today and cry tomorrow.
Security comes first and you'll need to be periodically validating that your seed phrases is still intact where you kept it , so it doesn't get tampered by human actions or natural factors.
Very important mate. Anyone can decide to buy and forget but shouldn't forget his/her seedphrase because even if you forget your bitcoin one day you will remember to use it and you would need your seedphrase. It will be of great gain for one to forget his/her bitcoin investment and remembers it again alongside with the seedphrase.
Security is very important just like the bitcoin you have, with good security you can always have your bitcoin but when security is taken for granted you may end up not having any access to your bitcoin.