I think the age of the scooter, and period (years if applicable) the scooter was not running since the accident is more important than the bent forks itself.
For a start - to my knowledge most of these scooters have roller- or ball a camshaft and con-rod bearings. To my experience at my job before I retired bearings tend to get rusted by time when our products have not been used for a few years. This caused all sorts of problems - including overheating problems.. The reason being - when a bearing get rusted the bearing grooves and balls / rollers are actually “pitted” due to the rust. Oil which normally lubricates the bearing gets forced into the small “rust holes” on bearings when bearings are running after a number of years again - and bingo, overheating as a result of rusted bearings.
On an engine sitting for years - just imagine the damage caused by rust on piston sleeves.
Not to mention problems that can be caused by stale fuel, gunked carburetors, gunked fuel injectors, or rusted fuel tanks.
Right or wrong - I think any given scooter or whatever was sitting for years is a “no-no” - specially when the prospective buyer has limited technical knowledge.
