i think there is no need of anonomity in insurance field
I don't think it's either black or white. For some type of insurance you would prefer anonymity. For some other it's not important.
Also, different people value their privacy differently.
also also decentralzation can't make enable to invest others money in something. I don't get idea about how this can work. P2P insurance
It's definitely possible.
Check out our whitepaper:
https://teambrella.com/WhitePaper.pdf(there' also a tl;dr on the site)