Things that's in the  link you dropped, is also narrating to what we know already in cryptocurrencies security privacy, people who make a research or read often about crypto wallet has already known the points the article is analysing..in every bitcoins wallet securing of your seed phrase us the most important thing so suffer, and I believe it's one of major priority, because if we keep our private keys in expose grand other person's may have access to it, so it's important for we keep it in rightful place so that we can have access to our hardware wallet any time we wants to import our wallet.