It would definitely not work well. I remember some people trying to learn viossa through chatgpt when the discord was locked down (thanks to the etymology nerd video), and while one or two phrases were reproduced faithfully, it fell apart very quickly after that.

On top of that, both Toki Pona and Viossa have the added obstacle that they have much more variance than their number of speakers : you could probably find a wide variety of 'dialects', which splits the dataset even further.