Commenters pointed out that increasing the number of representatives would increase the number of electors in large states, which would likely increase the power of Democrats in the EC. I haven't made the count myself, but it is likely so. What is disturbing about this in relation to the article is that the calculation of that - easy for the author, more difficult for us - is missing. The increased number of competitive districts is mentioned. That is a good thing. The evenness of safe districts was mentioned, which is temporarily a good thing, though we cannot see the future. So, red flag that a NYT writer doesn't give us those numbers, right when we are in a debate because the Democrats feel the current system is unfair to them.
If they want to show their open-handedness and good will, why don't Democrats vote to commission the Hoover Institute to reform the EC? They wouldn't, of course (nor should they), but we would at least be clear about the biases everyone is operating from.
The game can't start until we know the refs are fair.