Before investing your money in any product first, you need to learn how to safeguard those investments. Similarly, there are many options for you to keep your coins safely so you need search this forum and learn.
You can store your coins in a paper wallet or hardware wallet or in a desktop wallet and protect your PC from licensed version antivirus software. Finally keep your seeds and private keys safely.
I agree with that opinion, because before we enter in any kind of investment we must how to protect our investment from hacker or thief. Technically, you must have some knowledge before you do investing and investing in bitcoin is very safe because you can control your bitcoin and you can keep it in a safe place where your the only one who know it. Just keep your private key or seeds in a safe place.