Whichever Spanish speaking country he might be living in, the subs he's getting monthly is more than enough for him to have a decent lifestyle. Considering that he has around 1.8k subs on patreon with 1€ as the lowest paid sub option, if we were to assume that every single supporter is paying 1€, he's getting more than 1k which is decent in Spain and high income in Latin America. If I recall correctly, the dev stated a year ago that he had quit his job to focus on developing, making this project his main dedication. He was popping out updates on a 3 months basis at the beginning when he was supposedly still working at the same time but now that he's totally dedicated to this, not only can he not maintain the development speed from before but he actually goes missing and radio silent from time to time.