I do worry about their whitepaper recommending it for a CBDC[2] (linked from [3]) which points out the state can implement negative interest rates, and that its architecture requires the issuer to get involved even in "spot your friend a $20"-level use cases. Since the issuer would presumably be required to KYC everyone, that also creates a big surveillance problem.
[1]: https://www.taler.net/en/index.html
[2]: https://www.snb.ch/public/asset/de/www-snb-ch/publications/r...
Also, this works pretty poorly for scrapers because people would just set up massive junk farms to collect micropayments from crawlers, and then either the amounts would be too small for real creators to get anything or anything requiring them just wouldn't get accessed. The latter is probably what a lot of the media companies want, but then if the AI companies aren't paying and the normal users aren't paying, who is?