It depends on how wibbley-wobbley the timeline is in this instance. Young ~Scrooge saw that SingingAngelWoman was there in her predicament at the end, so that has become a fact of his future. So if the timeline is strict, that's the way it has to go because it's already happened.

OTOH, if time is rubber enough, Young ~Scrooge, now armed with that knowledge, might dedicate his life to changing that outcome. But presumably in the revised timeline he spent the time between the Sinatra Party and Crash Day doing just that, with no result.

Or possibly he just moped about it. Hard to say.

-The Gneech

Yeah, that was unfortunate. But hopefully it's a fad that will quickly pass.

There was also a big ol' steampunk vibe going on down on the planet. While that's a fad I approve of, it's still a fad. :)

-TG