I think coolcryptovator only wants newbies to avoid trusting paper wallet services from websites they aren't aware were only Phishing sites. Paper wallets are indeed the safest ones to store your credentials IF and only IF you would use pen and paper to store your public and private keys rather than using an online platform to create it for you. The only reason it should not be suggested is because people and newbies to be exact tends to search it on websites like google and use the websites shown in there without further searching on what is the most effective way. I've seen tons of users searched and used such phishing websites and it is really alarming hence making others discourage newbies to use it.