Infernal legion question

Just wondering if anyone can answer what affects the ignite damage from the infernal legion gem.

I quite enjoy lighting my life-adjacent minions on fire and want to explore that damage. I see that the ignite from that DOESN'T count toward cast-on-ignite, which I respect.

But I'm wondering if jewels/gear with bonuses to ignite magnitude should increase the ignite damage? Or if it would have no effect since gears and jewels imply "my" ignite damage, and "I'm" only lighting my minions on fire and "they're" igniting other things.

The "Controlled destruction" (+30% damage from hits and ailments, but they can't crit) gem sort of looks like it's working. And the "Minion instability" support gem seems to be counterproductive. But with all the RNG in the game, I can't measure this.