Are you reading something I'm not?I read that he said we could be over the pandemic at the end of 2021 if we act now and tighten up the restrictions. Then I see everything opening and rules being relaxed. It makes no sense.
I haven't seen him say we would be over the pandemic by the end of 2021 at least NOT in the way you're making it sound.
His comment, if it's what I'm thinking from a few weeks ago, stems from the vaccine availability and its distribution and how long it takes to make its way through the population.
This is one of his quotes: "Dr. Anthony Fauci said it could be the end of 2021 before we get back to how our lives were before Covid-19.
He told MSNBC’s Andrea Mitchell he’s been saying all along, “I believe that we will have a vaccine that will be available by the end of this year, the beginning of next year.” But there is a caveat: “By the time you mobilize the distribution of the vaccinations, and you get the majority, or more, of the population vaccinated and protected, that's likely not going to happen to the mid or end of 2021,” he said. “If you're talking about getting back to a degree of normality which resembles where we were prior to Covid, it's going to be well into 2021, maybe even towards the end of 2021.”
I feel like people are reading into things what they want unless you found a direct quote of him saying what is underlined (if you do please let me know

I did find another few comments where he said: "“With a combination of a good vaccine together with good public health measures, we may be able to put this coronavirus outbreak behind us, the way we put the original SARS behind us,” and "Dr. Fauci said it is unlikely Covid-19 could be eradicated. But he said that it would be possible under the right conditions to remove it as a public-health threat. Whether or not that happens will depend on how effective vaccines that are currently in development or testing prove to be, how many people get them, and how well public-health measures such as isolating exposed or infected people are deployed, he said.“If you have a vaccine that is highly effective, but very few people get vaccinated, you’re not going to realize the full important effect of having a vaccine,” he said. “The fundamental goal is to get the level of infection in the country so low that when there are little blips of infection, you can easily control them,” he said.