What is terrible with this history is that someone stolen his funds. The author even suggests blockchain. Com employees.... I wouldn't say it is impossible...
It's a web page. Nobody stops certain employees change its internals conveniently for 10 minutes to something that will also save/steal all that's needed to access the money later.
You have to trust them that this will not happen (to you). Or you use a proper wallet, with much better change to find out in proper time if the version you've installer has problems.
With bitcoin getting more and more expensive, more and more people will try to steal it.
Is blockchain.com responsible? Hard to tell; one would have to undoubtedly prove it.
And without that, their ToS pretty much makes them untouchable; if the user doesn't read nor understand it, too bad.