If this happens, the price increase of BTC is only due to the fact that the dollar has become less valuable and not because the price of BTC is rising. So you could buy just as much BTC as before, it would just be nominally "worth" more. I would much prefer a significant price increase while the money supply remains the same, only then would there be an actual increase.
Yes and no, because the one can't exist without the other. Plus what's causing the Dollar becoming less valuable is because they're printing more of it, which causes inflation and causes prices of goods and services to increase, including Bitcoin. In such a world, don't you think that Bitcoin's rising price is representive of its value? It is in my opinion.
But I completely agree with you about the ETF surge: I don't see it as priced in yet either. Mainly because the major ETF providers are still going crazy with their BTC holdings.
It's mainly because the money printer is off. Turn it on, and give the major asset managers access to the newly printed money.
It will be a Golden Opportunity for Bitcoin HODLers.