I think that the great filter is a combination of two facts,
- our entire radio output is pitiful compared to the sun, like a candle in front of a flood light, you’ll only be able to see it so far before it’s completely drowned out. After a few dozen light years our radio output is less than the margin of error of a stars radio output.
- as a civilization advances it must reduce radio leakage. As data gets more important, it gets more important that we’re not wasting energy moving data. Narrow beamed radio transmission becomes the norm and even less radio signals escape the system than when radio was messy and overpowered.
They’re not missing or gone, they’ve just moved beyond messy radio signals. Even we tightened up our radio emissions in a little over a century. Most of what we watch or listen to comes to us via fiber, cable, or short range transmissions line cell phone towers.
Well it’s Russian infrastructure on Ukrainian land, who cares what it’s for?