I've no experience with Lexmoto but I do know Chinese bikes.
Lexmoto is one of the better known brands out there making cheap bikes. They are pretty stupid cheap for what you get. I see the bikes have EFI (Chinese bikes in America don't even have that), digital displays, combined braking, LED lighting, are Euro 4 compliant etc. And even better, it seems Lexmoto's bikes handle themselves quite well, all things considered.
These are very much built to a price. And all of those awesome features do mean they have to skimp out in other areas. That gives them questionable long term reliability and durability.
So I'd say this: Only get one if you're also interested in learning how to wrench on a motorcycle. And get a used one, since I'm sure depreciation on them is heavy.