Using Perplexity AI as an alternative method to research the veracity of the claim, I was unable to find any information regarding a source that Israel was using bouncy castles to provide aid. The original X post featured a screenshot of text, presumably from a news website, though without any source or titles. This, firstly, raises red flags that the story is manipulated, edited, or falsified content entirely to spread anti-Israel disinformation. Given the strange nature of using bouncy houses to block aid, and given the large size of the usual bouncy house, it's likely that at least some pictures would have been taken of the event, or other news sources reporting on it. Given Perplexity's inability to find a single news source of the event, I must rate the claim as false.