Would a blockchain based Glassdoor alternative make sense? You can't sue a blockchain, and if they do somehow, they're not going to ban the entire blockchain in the whole country just because it provides anonymous reviews.
The issue is not that Glassdoor is being sued, the issue is that there is a company who wants to obtain the identities of those using Glassdoor to make comments about the company.
Most people use Blockchain through established services such as Coinbase -- Coinbase, and most other legitimate services like this must comply with KYC rules. So instead of suing "a blockchain", they'd demand the identity of the wallet holder from Coinbase.
I can't see how going to a blockchain resolves any of these issues, but perhaps you could elaborate?