Probably not meant to directly nerf it, but it did get nerfed while fitting in the Door Gunner MK.
Advanced Logistics now requires Door Gunner instead of Charged Chinooks. Players who purchased Advanced Logistics prior to the update will still keep it.
Before Version 24.0, a Dartling Gunner with Advanced Logistics costs the same as it does in BTD5, at $950 on Medium. This is because the Dartling Gunner's default base cost was $1000 on Medium. This is no longer true, because the Dartling Gunner got a base cost buff.