I just tried it on an iPhone and it worked...fine? The collapsible configuration panel has some placement issues, but otherwise the page is perfectly usable.

Secondly, it's a tosser simulation. It isn't a transit app for someone running to catch the train. Someone "vibe coded" it for novelty and they owe you, or anyone else, literally nothing.

As ucosty mentioned, "It's a lot of work for very little return". As some who made dozens of fun little web gadgets and toys that hit viral success, there is something remarkable about how entitled people get for something that literally benefitted me in absolutely no ways.