Do support troops count against the thousand-warrior limit?

Does the thousand-warrior limit apply only to battle-line troops, with support personnel and scouts exempt?

The count appears inconsistent: some support personnel are exempt, while other chapters treat one thousand as a hard total, and scouts are still trainees rather than a complete replacement pool.

The exchange exposes an ambiguity in how Warhammer counts personnel. If the limit covers every Space Marine, support units consume positions needed for combat and regeneration. If support troops and scouts are exempt, the headline figure understates the formation's real strength. Scouts are still trainees, so the tenth company cannot by itself provide a complete replacement pool.