You're downvoted a lot because you didn't substantiate your claim, but I assume many people, myself included, agree with the sentiment.

Up until now Lubuntu had a clear goal: Create a usable Ubuntu-compatible distribution that runs on old hardware.

Now the goals are so vague and subjective that they lead to nowhere. Sure, this won't matter in the short term, but sooner or later the project will get completely derailed because of different interpretations of this dumb statement.

They can still make a good lightweight OS that runs on 10 year old hardware. There's no reason to change the goal.

Sure, it's no longer a massive challenge, but it doesn't have to be. If the developers want to try new things they can fork it.