This implementation sounds better. Though for me I still have to manually input a code from the Duo app (that doesn't auto refresh after code entry since it's not time based).
Having the do the manual entry and the lack of refresh is a choice of your security team/administrator. Duo supports push notifications and auto-refreshing TOTPs.
Source: I used to work for Duo.
well apps like 1password makes it easy to fill those 2fa codes from computer and phones easily.
Absolutely. For me, I don't think I would use anything other than 1PW/Yubikey for 2FA codes.
But not everyone uses such technologies, and a certain percentage of population is going to find the hurdle to adopt these technologies/apps too high.
So, not for us, but I understand why they do it.
Okta offers a similar feature. So much easier to click a confirmation on my phone than to scroll through dozens of 2FA codes (some of which might be orphaned).