When I visit your link about
" Can Two-Factor Authentication be hacked? " , . It seems that 2FA is not easy to find a glitch or even the author tell that " it is worth using to greatly increase the security of the digital assets it protects.". That's why most of online wallet is recommended to use the 2FA security ( for example HITbtc and many more).
2FA is just additional security, but also every user need to protect his account with unique&strong password, but e-mail account should also have same kind of password (not identical of course). I think you should read better that article, 8 possible ways are mentioned for 2FA can be compromised. Users often do not take seriously security of their smartphones, and that's something all need to pay attention these days.