This information is so deceptive because none of the wallets listed is open source unless I'm mistaken. It is even more terrifying that this is coming from Google, the first point of contact for anyone looking for information as serious as that. Does it mean that Google does not know anything about self custody? Well, those articles were published by people and Google as a search engine, simply root them out as they were written. This indeed shows that one should be extremely careful of the source of information. One way to avoid issues like this is to compare multiple source like Youtube, Google and other platforms so that the reason given by each of them can be analyzed to arrive at a better conclusion.