Reflect's website banner announces $6.5 million seed round led by Sequoia. A few comments here claim to have run the numbers. With negative results. How do see

Reflect's website banner announces $6.5 million seed round led by Sequoia. A few comments here claim to have run the numbers. With negative results. How do seed rounds with name-brand VC work? Please tell me an independent party would have been paid to do due diligence on the feasibility of the approach. Or is this perhaps an investment in the team with an openness to pivot.