So far I have never problem using Authy, so when I compared it with Google, Using Authy is simpler when we change cellphones, we can log in again using the same cellphone number and receive a code via SMS. I have experience lost the google 2fa code and can't login on 2fa. because of that, I prefer using authy for beginners who have weaknesses in storing data or code on paper.
Well, all of us don't have the same experience if the authy is working just fine for you then it's fine I believe you'll understand it better once you've gone through others who have experienced similar to those mentioned in the news but for now, since you believe it safe then we can't change your thoughts since we have difference experienced.
Another thing is I avoid using authy just because they always got breached like the news said posted just a few weeks ago they got breached meaning it happened again so how are you sure that you are safe using authy?
Yes, it is easy to use but the news about breaches alarms me not to use them anymore.