Most other classes don't get tool proficiency at all.
Artificers get 2 at level 1, and 1 from their subclass. (Also thieves tools, but that doesn't help for magic items).
Sure. I have used the old one creativity several times. But I expect i will use the new one far more. If nothing else than to just drop Caltrops at the doorways before I rest.
Mundane items got buffed in 2024.
So i still think it counts as a tiny buff. But i don't think you'll break anything by having both.
Or turning the old one into a cantrip.
Did they update that tome for 2024? Because the majority of item had those requirements removed. Tome of the Dragon for instance, doesn't have any.
Which is why I expect they got rid of the feature. It wasn't doing much anymore.