Re 2)
Your concerns about bots are valid, as this is a well-known issue among web3 research professionals. That is why our team at datalatte spent time building our own in-house survey tool, which can substantially reduce the possibility of a Sybil attack by leveraging web3 reputation & DID solutions and attracting only high-quality data. Additionally, we use non-technical service design methods to minimize duplicate participants.
However, we are in a difficult position regarding sharing details publicly, as doing so may defeat the purpose. We are able to discuss our approach in more detail via private message or a 15-minute call if you would like.