It doesn’t change the facts of what this group is about.
But they are far from a lefty site. The type of rankings are shown in greatly favoring republicans in congress and failing ratings for the majority of the Democrats.
I suspect they gave your favored candidate, (now out of the race) who was also the one I tended to favor, a really bad ranking on immigration.
Everyone who disagrees with you, is not automatically a lefty.
This site is far harder on most democrat positions, and far more approving of republican positions. You need to take off your blinders.