Why has Magneto getting a pass? He created that technology. Forge just improved his designs.
So? He's still built technology which can be used against mutants. He repaired a damaged Nimrod, as well.In either case, as Hickman's run pointed out, Forge's technological skill is not Omega level, i.e. it has a fixed definable upper-limit which can be surpassed by Reed Richards and Tony Stark.
Maybe don't deliberately antagonise those people then, try working with them instead of making them enemies.What that means is that the X-Men have found ways to counter and overpower the use of Forge's tech owing to them updating their stuff and capacities. But the X-Men don't have any means by themselves to update and counter Reed Richards' stuff, so his inventions pose a far greater existential threat to them.