12
Japanese Bicycles Are Built Different - YouTube
(youtube.com)
A place to share our love of all things with two wheels and pedals. This is an inclusive, non-judgemental community. All types of cyclists are accepted here; whether you're a commuter, a roadie, a MTB enthusiast, a fixie freak, a crusty xbiking hoarder, in the middle of an epic across-the-world bicycle tour, or any other type of cyclist!
Community Rules
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia.
Be respectful. Everyone should feel welcome here.
No porn.
No ads / spamming.
Ride bikes
Other cycling-related communities
Wobbling would be more influenced by the caster angle than anything (which is really the rake angle on a bicycle or motorcycle). It's the same reason cruiser motorcycles are easier to handle than sport bikes at lower speeds.
Straight bars would be more responsive since they're a shorter lever, while the curved bars are a longer lever, meaning it takes more arm motion to turn the wheel, so those bikes should be more stable/less twitchy.
Must be more at play with the wobbly riders you're seeing.