Truthfully, I came away a bit jaded about the whole culture around technical interviews and whether most companies actually have a genuine desire to change their interview process.
Still, we both really want to see something like this succeed. My current bet is still on https://www.woventeams.com/ but very interested to follow this as well.
FWIW, this was exactly what we were against at Headlight, as is Woven and (presumably) Byteboard as well.
There are plenty of practical interview questions to ask candidates, but it requires a lot more thought and preparation than I think most companies want to do.
The reason (imo) that quiz/trick/etc. type questions are popular is that there's a clear "right answer" most of the time. No nuance required. Introducing nuance requires humans to reason about things, and that takes up time (and thus money).
The irony for me is that when I did encounter these questions, I already knew the answers from research (i.e. the egg drop question, how would build an M&M, etc).