Some whales seem to believe that ETFs will eventually be approved, so they have seized the opportunity to buy sooner than others. Even if they don't see the ETF approved later, then the halving will probably help them get a return. It makes sense to buy now instead of waiting for an ETF to be approved or when demand for bitcoin increases due to the halving.
It's two way around on this upcoming bull run. Those that are optimistic with the ETF approval, they'll have to buy before the push happens from this news and you're right that even there's no good news about the approval, the halving is approaching and that's another factor that will make the market higher and will result to a higher bitcoin's price.
So the question we need to ask, if the ETF didn't get approved now, why would it go up now? It should go up when the approval comes in, and it is not coming in anytime soon, not like for another month and probably even later. So, it is basically just a rumor that made the price go up this much and that's not really a good reason but as long as it is higher, I am happy, no matter what the reason is.
I think if there's not ETF approval, the common ground here is the basic reason for what makes bitcoin up and that's the preparation for the halving. We can say that the increase of the price was due to the manipulation and wrong news about Bitcoin which tends to be good and positive news. But without that, we can still have a good ending for this season because of how we're seeing thing like now that there is a FOMO whenever that we're so close to the halving day.