The same will happen with Trump's "strategic bitcoin reserve" executive order, which could be repealed after Trump's short term ends and if the next administration does not same Trump's views.
So until the bitcoin reserve is approved by congress, no more bitcoin will be added and even if they find a way to buy more, it will likely be sold during the next presidential term.
Bitcoin has been growing very organically and strongly since 2009, and its adoption will continue to grow up after previous sharp but solid parabolic growth curve. I believe that the USA government see potentiality of Bitcoin and how they can be a leader in Bitcoin, cryptocurrency, blockchain industry and market, so I see no risk that future Presidents of the USA will revoke all previous executive orders or policies on Bitcoin. They know that if they move against the global trend, their nation will fall behind and lose it leadership and potentiality of monetary gains.
In the previous term, the Biden administration and the Democratic Party were not very friendly to crypto, if they really cared and wanted to make the US a crypto hub like the Trump administration. They didn't enact SAB121 or try to impose a 30% tax on bitcoin mining, and they could have created a strategic bitcoin reserve instead of trying to sell those seized bitcoins...If they were crypto friendly, they could have done many good things for crypto before Trump took office but they didn't, and that's enough to show their stance on crypto.
Also, according to some sources, not all Republicans are as pro-crypto as we think. There are very few crypto advocates and that is why so far no more Republican congressmen have supported Senator Lummis' "Bitcoin Act". Or to put it bluntly, if they support crypto, why hasn't Congress passed a "strategic bitcoin reserve" yet? That alone proves that the US is taking bitcoin as seriously as they said.
By the way, they have been a world power for over 100 years without bitcoin, they will not become obsolete just because they do not have bitcoin reserves.