Only if the single word is approved and the court allows using a single word subset within a larger trademark as being actionable. If every single word is suddenly 'owned' by someone because it's part of their trademarked name, that dramatically reduces the available trademark space. And buying a previously trademarked 'name', unless identical still does not mean you have grounds to claim 'market confusion' - as the product name did not apply to the product at the time the trademark was applied for. Next they'll claim all synonyms too: Lollie*, *Smasher, etc. Where does it end?
If the words were identical, or so close as to be confusing (i.e. CandyCrusher vs CandyCrush), then yeah, they have reasonable grounds for taking action. But CandySwipe as a name neither sounds or looks anything like CandyCrusher. And attempting to trademark anything with the word Candy in it, and then start suing people before it's even fully granted is jumping the shark.
See Microsoft and their attempt to take control of the single word 'Windows'. They tried and failed to trademark the single word 'Windows'.
The only outmanoeuvring that went on here, was targeting an smaller entity without deep enough pockets to defend themselves against a heavily financed legal attack.