If we see last two week Bitcoin price chart than Bitcoin is bulls now. Still I believe Bitcoin are bullish run.
I'd say bitcoin is recovering slowly. It's not yet a bull run so to say. A bull run will be indicated by a strong and undeniable price growth. What we are witnessing in the past two weeks is a mere recovery.
After expose if ETF news it was run on bulls.
My apologies, but i did not understand this part. But many are speculating that an approved ETF will help unleash the bullish season (if that's what you mean).
And it is generally true, either bullish season or not, bitcoin have a steady stream of investors compared to altcoins due to its liquidity, demand and market value. So it is no wonder investors keep moving towards bitcoin. Still is the most sensible choice of crypto till date.