Oh boy, 2 whole skills. Compared to how many skills that buff ships exclusively?
Why are you comparing fighters to ships? Since when could you pilot fighters? You should be comparing them to other weapon types. If you look at it that way, fighters are well off. There is only one energy weapon skill, only one missile weapon skill. Ballistics doesn't even have a dedicated skill. Pd skill affects both fighters and weapons. That leaves just weapon drills, target analysis, gunnery implants, and ranged specialization. So depending on your weapon, you have 3-5 skills affecting it while fighters can have up to 4. Additionally, fighters are not affected by ecm, or at least not as significantly.
Weapon drills is pretty weak though. I don't think it would be the worst thing in the world if it affected fighters if it doesn't already.