538 shows the same result, Kamala +11, for the specific Morning Consult poll cited in the chart.

But you are correct that this poll is an outlier compared to other polls, and we probably need more data and for the race to settle a bit before we have a sense of the actual margin.

I’m hesitant to put too much stock in any numbers a single week into her candidacy. It also bears repeating that no poll matters unless people vote.