It sort of is and it isn't, in a lot of ways.

1. Polls have been notoriously unreliable for over a decade now. Part of it is cell phones, part of it is increasing numbers of people feeding false responses, trying to influence the poll.

2. Do that many people really want to vote for Trump? Young people are notoriously leftist, and older people are notoriously conservative, and millennials on down are changing the path to becoming conservative as you become older. Meaning more and more people are leftist or liberal or centrist, and less and less are straight conservative. Trump's comments literally lead to the death of millions of old people during COVID. We have yet to actually see in a major nationwide election whether or not he actually killed a sufficient enough of his own voters to start swaying elections towards the Democrats nationally.

3. Democrats and the media are doing what they always do to the young when they complain that the Democrats aren't doing enough: They'll equivocate it with saying "I'm not going to vote for a Democrat!" which is actually not what most young people are saying as much as they hate that the Democrats are essentially holding their votes hostage by refusing to do better and hitting us over the head with "but if you don't let us half ass it, FASCISTS WILL TAKE OVER" which is some seriously psychologically abusive shit, literally threatening us with fascism if we don't give in to their half ass takes. However, as an old man, I've seen the Democrats do this to the youth and depress their own youth votes for forty years. I literally lived it myself as a youth, over 20 years ago. All they do is talk down to the youth and act like any critique of their policies must mean a vote for the Republicans, not a clear understanding that Republicans are far worse, but that's not an excuse for Democrats to be the milquetoast halfass bullshit party.

So between Democrats shoving their own foot up their own ass like usual, and old people dying by the millions to preventable disease, it could still go either way, even without Russian's trying to subvert the election. As usual, the Democrats are subverting themselves well enough already.