As I said to him, “in the US you don’t get to vote and get someone better than Joe BidenActually, write-ins are a thing, so you literally can vote for anyone else than him and Trump.
I think you misunderstood the author. You can literally vote for anyone, but the winner of the next US presidential election is only going to be Biden or Trump (barring a crazy twist, e.g. death or criminal conviction). I think the author's point is that, in any given election, you should probably vote strategically, but getting better options takes a lot of work for a long time to make it happen, so get working if you can.
The Atlantic had a good article on this a couple weeks ago (no paywall). It sure feels like a move in the wrong direction, but the authors note Oregon's overdose deaths grew way faster than the rest of the country after decriminalization. Their take is that Oregon already had pretty good laws place, and that a little bit of a legal threat can help to encourage addicts to seek treatment (and that the treatment system needs to be better funded).