Isn't it easier to just use accelerated protons or electrons for this purpose on much more smaller and agile ship, than trying to move a star? Additional probl

Isn't it easier to just use accelerated protons or electrons for this purpose on much more smaller and agile ship, than trying to move a star? Additional problem with this concept is, that if you will close a star into a sphere, won't it have effect on star itself, like destabilization of fusion process, because of excess energy? For example when star will start burning helium, it will get bigger. If you will prevent the star from getting rid of excess energy, won't it build pressure in the star, so it will start burning helium instead, expands and destroy the Dyson sphere in the process? Then after pressure decreases, it will go back into being a normal hydrogen burning star again.