but JPMorgan Chase are now offering Bitcoin to a range of clients
It may not matter much, but afaik they offer Bitcoin fund and Bitcoin related derivative products, not actual bitcoin.
Is Bitcoin still yet a speculative asset or a store of value?
The question is important and the answer is not easy, not yet. With the wide (wild) price fluctuations it's still risky - at least for short term - to see bitcoin as store of value. Of course, in time the price change should get somewhere near to gold (i.e. boring) and then we can say loudly that we have a store of value. Until then it's still more a speculative asset than a store of value. Still, at various degrees, it's both.
Also bitcoin high transaction fee, is it not related to this? Because the lower the fee the more Bitcoin will fit into the currency category.
Imho tx fees are not rising based on normal day by day use of average Joe, they rise basically when traders get woken up. When price fluctuations will be boring, this will not happen anymore and we will see if we have a problem with high tx fees.
For most people, it’s something in between. They want to make transactions without being traced, but, at the same time, accumulate Bitcoin and subconsciously wish for the price to grow to make a profit.
Actually most people don't even know good enough what bitcoin is. They've heard about its price. And then they'll probably answer "speculative asset". But as said, you better answer what it is
for you.
And yeah, bitcoin is traceable unless you mix/coinjoin...