1. You cannot "transfer your bitcoin to ETFs" in US yet, afaik, but some applications to do that were filed at the end of January.
2. Tax implications in US, again, are unfavorable as you will be hit with a cap gains tax, presumably, unless there is a clarification.
3. This is the easiest way to 'load" the BSR, so, perhaps, #1 and #2 would be solved in time.
Not to mention the NYKNYC concept.
I am surprised that planB does not "follow" this.
From the financial manipulation (borrowing, lending, etc), ETFs are easier because they are securities and securities lending is robust with much better loan interest %.
The loan interest on bitcoin is high, currently.
All "financial types", like GS, Paul Tudor Jones, etc, are using ETFs because they are used to securities.