So, the most important answer we have so far to your question is that this appears to have been a massive victory for Palestinian counter-intelligence. If they managed to plan, prepare, and execute this without Israel or any of the 5 Eyes seeing it, then it tells us something profoundly important.

There are second order implications if this is true. The most important second order implication is that if their counter-intelligence is truly that good, then they're unlikely to have only used it to plan an initial strike. If your counter-intelligence is working that well, then it becomes possible to prepare and plan multiple moves into the future.

Another second order implication is that it is likely that Palestinian counter-intelligence did not develop on its own but instead with support from other actors. That would imply the existence of alliances that are providing some kind of support.

If both of those are true, then the second and third moves that are planned likely involve support from allies. That could be exit routes, it could be material support, it could be geopolitical support through diplomacy, sanctions, and threats.

A lot of this hinges on the assessment that Israeli and 5 Eyes intelligence failed here. If it did, then we are at the beginning of a longer unfolding of events and need to watch carefully to understand what's going on because if the West failed in this way, the propaganda is going to focus on hiding this failure and its implications.