People should be suspicious of statements regardless of tone. Conmen, hackers, cult members, job applicants, and AIs are all trying to trick people who only listen to tone.
It's also not really necessary a lot of the time. If some random person online confidently says that the newest tesla uses an engine which contains ball bearings made in Indonesia by child slaves, I don't have to spend the time to doubt and analyze that because it doesn't impact me personally. I'd only ever need to take the time to double check that if I were going to buy a tesla or before I went and spread that information around as if it were fact. How true or false it is doesn't affect my life in any way. It can just be something a random person said online and I can treat it as such.
Whenever you see information that sounds like it could be extremely important to you and your situation (and when being wrong could really hurt you) then no matter how authoritatively the information was delivered that's really when you should invest the time to verify it. Much of the time that investment is just a quick internet search anyway.
Unfortunately, due to budget cuts, we could not afford to vanquish all of the antiques in the architecture. We do have an infinite spell of Ben Gay, however....
As with many things, it becomes easier with practise. Also, you can pace accordingly: do I quickly read 10 articles today, or pick 2 and peruse them in depth?