I should've worded that more clearly. It's not that I discourage the usage of Authy, it's just that I far recommend the usage of Google's 2FA app; and that's because with Authy, your backup is stored in the cloud. Yes, I think it's secure as it's surely encrypted, but I still find it inferior security wise to Google's 2FA due to this reason.
tldr; Google 2FA > Authy > No 2FA at all, and backup your Google 2FA codes on paper