Bitcoin does not need any SBR, and so it seems problematic to be thinking that bitcoin needs SBR.
It's more the other way around but you yourself say it later on.
The USA needs bitcoin, bitcoin does not need the USA.
There can be various kinds of rug pulls and/or even attempts to manipulate the bitcoin market, and longer term bitcoiners should already be used to this and even expecting manipulation on a greater level than previously. They are likely not going to be successful in their various manipulations, but that won't stop various manipulation attempts from happening from time to time.
Well but that risk is there even if states do not implement strategic bitcoin reserves. When there are big players accumulating, like MSTR or Blackrock (albeit in a different way) that risk exists.
so for example if the USA puts a SBR in place but they keep spending like drunken sailors, then it is difficult to see how any SBR would bring any benefits if it is indebted way greater than it's quantity (aka fractionally reserved or rehypothicated).. Sometimes when governments have resources they exploit and encumber them and even over encumber them.. that is what they do...and difficult to get out of such bad habits that fiat/debt systems have been rewarding for so many decades.
It does not appear that this will be the case in the short term at least. In the medium and long term I doubt it more.