The crash that did not cause Britain's Helldiver rejection

How much did the 6 October 1944 Helldiver crash affect the Royal Navy's decision to reject the aircraft?

Very little; the service had already decided that it did not need the Helldiver's specialized role.

The Royal Navy had decided before the crash that it did not need a dedicated dive bomber. Test aircraft could still serve as tugs or in secondary work, but other types already covered the required attack missions. The wartime Navy was also reluctant to add an unnecessary aircraft type and its associated logistics burden.