I'd say a good chunk of TDMs (which are canon) are reactionary by virtue of needing those to be broadly accessible to new players. Events are more variable, but character actions definitely have an impact and the status quo has been gradually shifting in the game. For instance, there was an event early on where an evil fire circus came to town to taunt characters. A few months later, a player plot was organized where characters went and hunted down that circus and murdered the main NPCs from the plot. In that, they eliminated the circus as a future threat and gained intel on certain other NPCs and events that fed into the finale for the first story arc of the game.

Character decisions from the arc finale where they had to stop an apocalypse, but ended up destroying a major business that was the lifeblood of a community in the process, are still having effects, and there are hints that one of the characters from the fire circus that characters didn't manage to kill may be coming for them soon as potential fallout for their actions of destroying the circus.

Another instance is a major NPC got demoted after characters convinced NPC leadership that they couldn't be trusted in their current position.

Player questions and actions can also feed into the event prompts that happen in the game. For instance, there's a character who asked about doing a certain thing to try to fix an IC problem she was seeing in one of the TDM prompts. The mods came back with a little info and a note that this question will be prompting them to include something in the event that addresses it.

Hope that answer the question!