I have no news, but I hope HN could reach him :-)

Seems like, at least until 2022, he was still playing tennis tournaments in Club Stadio Italiano, located in Las Condes, Chile.

https://tourtenisquinta.cl/site/perfil?id=763

I hope he's doing well, wherever he is. An active community around Dillo sparkles my wanting of hacking on it, Dpi (especially filters) is the best plugin system a browser could have imho.