Artifact Uprising interview questions

Got reached out by a recruiter, after that had a casual conversation with an engineer. Proceeding this initial process I was assigned a hefty take home that involved creating a full stack eCommerce shopping cart application, the description states that the work should be able to be completed within a day or so, but applicants usually take a week (uhmm what!?) . After spending a week on the project I contacted the recruiter and was told they moved forward with someone else (yay me for spending hours on this and having the recruiter waste my time). I would say I had a pleasant time talking with the engineer, but their HR department lacks transparency and honesty with candidates.

The interview process started with a 30 minute call, which took over a week to schedule. After that, I was sent a code challenge, after submitting it I was invited for an in person interview. The in person was 5 hours long (including provided lunch) with a number of different people (assortment of engineering, product, and management). All but one of the people I interviewed with were a delight to speak with, while one of the engineers was more focused on taking notes, and getting exact answers to the typical canned engineering hypotheticals. Ended the day on a positive note, was told I'd have next steps the following day. 2 days later, after reaching out, I was told they did not want to move forward with me, citing personality and potential working relationship as reasons.