This firm could be way off, or they could be catching something everyone else is missing. This is their first cycle so not a whole lot can really be deciphered, just throw it in the average.
I certainly don't think this result should be dismissed. We should be making sure to consider every poll which is released, so as to provide a more thorough picture of the situation. I think that is the best way to avoid any accusation of bias. The RCP average right now is Biden +5.9, a decline for him, but still a very reasonable figure. If you look at the page (
https://www.realclearpolitics.com/epolls/2020/president/National.html), most recent polls have a result between Biden +5 and Biden +9, with only the Rasmussen poll (Trump +1) being a significant outlier.