What OP say is not always work. For example there is a topic "
Opps, Google did it again" - where first google link lead to fake ledger app, that asked for secret phrase. Of course google fixed it, but there are people who downloaded it and got tricked.
If you go to official websites to get official links to apps on app store or Google play, you will not be trapped by fake apps like what the topic you quoted warn. You should never pay your funds on the carefulness or responsibility of Google or Apple to check and 100% prevent fake apps to be listed on their stores. They should do because it is good for their app ecosystem, and their reputation but you in your own side has to be responsible for your fund's safety and security.
Official websites are not a panacea against scam. Check everything two or even three times before you type your personal info in it.
Official websites are good places to start but sure official sites can also be compromised. It rarely happens but there is probability for compromise on official websites. If you care careful, you can verify apps if possible.