I cannot really comment the sports and studying, maybe @marasan can chime in as he’s got kids and is also an active cyclist/triathlete.
Here’s what I can say. There’s hardly any scene for competitive cycling in Taiwan. Nonetheless, there’s some road racing here in Taiwan. His coach says he’s promising, but has he gone out to any races and won anything? If he’s not getting his foot in the door right now, he’s very much behind in terms of training and experience, but who knows, your kid could be a natural.
If he really wants to go pro and find a job in Taiwan, it’s not an easy market, especially here in Taiwan. I work in the industry and Taiwan is the center of manufacturing, so there’s jobs in factories, but those are never the greatest jobs. Distributors and shops are all struggling to keep afloat, so outside of competing, the cycling industry in Taiwan is…meh.
Taiwan is not known to give great support to their athletes, even the only Taiwanese women cyclist to ever compete in the Olympics, Huang Ting Ying, did not have the best resources. When Taiwanese cyclist go overseas to train or compete, they usually can’t keep up due to the dietary differences, weather, pace of westerners and much more.
Below is a documentary of her when she was training for the Olympics.
I would say, let him try. If he’s really good, it could work out for everyone, but if he’s unable to surpass the top tier guys in Taiwan, you might want to talk to him about a different career path.
Good luck, hope I was helpful.