Isn't it a bit excessive to say that local events 'validate' or 'invalidate' a destination, when it is more about adjustment and feasibility? Both sides have a point: yes, events affect the experience, but that does not question the intrinsic appeal of a place.
The middle ground is to recognize that these manifestations are a variable of adjustment for planning, like price increases in Dakar during the Grand Magal of Touba that require a budget adaptation rather than a simple cancellation.
Events should be viewed as calendar or cost constraints, not as definitive judgments on a destination's value.
My job is to evaluate candidates: a rare skill is an asset, but if the local salary market makes it unaffordable, it is not the candidate who is 'invalidated', but the recruitment strategy that must adapt.