None, but that is not the point. The point is: can we use the code without hindrance in whatever plans we have now or in the future? Or is building upon the code like going into a long one-way street?
The fact that some people will use the code without giving back is secondary to that.
That is not just my opinion, because if a more liberal library comes into existence (inevitable), it will prevail.
These licenses prevent Graal VM from being used inside e.g. OSes and browsers with a more liberal license.