Thanks for the report, I did confirm this issue with the sound effects slider, so sorry that it caused a bother for you!
Regarding the theme, I appreciate the feedback. I generally don't like to interpret themes literally (because all the games in the jam end up being very similar), but I do agree that this one is a bit weak. I had initially been thinking down the path of idle games and how you start with small gains but build momentum over time (which is where the idle mechanics in the strategy game came from), then ended up thinking about games like space invaders where the momentum of the gameplay gets faster and faster. Combining those two was the idea for this game, but if it's not apparent while playing then I clearly should have done a better job in communicating the thematic elements. Thanks again for playing and for the bug report!