^Sure, excessive lowering will mess up the roll geometry. But a drop such as 0.5" is well within the stock suspension's normal operation conditions and will not have an adverse effect on the suspension performance.
The picture you are showing is probably a dedicated track/race car, judging from its front strut with remote reservoir (at least 2-way adjustable)... probably lowered 1.5-2" from stock? Any shots from the outside?
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