Good job WBTS! You got them busy in a nothing work.
Sometimes religious activity is about making people feel better about themselves. When you don't get results from your preaching activity, then you have given praise to Jehovah. That's all. and there is a concept of 'you don't know where the seed may fall' scene, where tangible results are not seen but witnesses feel somewhere someone must be thinking about the truth due to their cart activity.
This is pretty much true in the ex-JW activism world too. A kingdom hall crash or picketing at conventions produces zero results. But then it satisfies the ex-JW activist and, like a JW he thinks that someone must have noticed him and would have awakened.