Two things:
1. That quote was from over a year ago, and a LOT has changed since then. I would be curious if Biden would say that now.
2. It wasn't a popular part of Obamacare, but IIRC it was an important piece for making the whole package legal.
Overall I would wager you wouldn't get that quote out of Biden now. I'm sure his Healthcare team, now that Biden is the Democratic candidate, has a better overall answer. However, anyone still backing Trump as this point, and planning on voting for him, wouldn't have the cognitive power to work through that issue.
If Biden wins and the Senate flips, there are probably 400-500 bills that will get passed in 2021, part of which will be a bolstering of Obamacare.