The article and technology is intentionally written in such a way as to avoid weaponization and abuse from the onset, with further input by the community which toned it down further. The current facts exist.
1. One end with the Link Ring has to be equipped in a vessel and shielded with a stabilizer.
2. The other end can only be in the core of the dominant celestial body of the area, within the same vessel, or interstellar space.
3. The diameter cannot exceed 5 meters.
4. The wormhole cannot bypass shielding or distortions caused by CFD/CDD travel, even at STL speeds, except for that made by the whip in which the Ling Ring is installed.
The following are the ways I can see it potentially weaponized, but most come with issues.
1. Plasma is taken from a star and fired as a normal plasma-based weapon originating from a system hard-mounted inside a vessel. (Indirect, functionally just a high-yield main gun, acceptable)
2. Some small craft (missile or some automated drone) is used to make wormholes for attack purposes to a planet or enemy unit (impractical due to size of Link Ring, but perhaps language can still be added?)
3. Link Device-like wormhole use in interstellar space. (Most combat doesn't happen in interstellar space anyway)
4. Depleting a star's core faster (impractical, likely takes millions or billions of years. Some stars might even live a little LONGER due to the reduction of mass, I am not sure)
5. Directing a Gamma Ray Burst at a target (impractical, gamma ray bursts are brief in a star's life and too rare to take advantage of, plus the 5 meter diameter constraint. Aether probably more practical a weapon.)