Elite: Dangerous PvE - Mobius

I've recently read several comments about AI ships no longer deploying heat sinks. I've got about 15k kills and I don't ever recall seeing, or noticing, a ship deploying heat sinks. I've seen them open their heat vents, and now the used chaff pops free from the ship, but I'm curious what a deployed heat sink looks like. If someone can point me to a vid that shows this (as I apparently can't see it in game anymore), or upload a short 5-sec clip of just the heat sink deploying, I'd appreciate it.

Before 2.1 I often saw them deploy.
It looked like a giant singular flare and was represented on the radar same way missiles and mines where. Like a neutral gray marker.

They only stay for a few seconds.

Is this a since Horizons thing? I spent most of Horizons on the DWE.

I did look through a ton of my own videos and could barely find an instance of an AI using an SCB (actually, not sure I did see it, though I've seen it a ton in the 2.1 beta). I wonder if it depends on the weapons you use. I usually used main pulse lasers, with pulse or maybe beam turrets on a Python and Anaconda. I guess those weapons don't generate the heat that would cause an AI to use a heat sink.

Were those heat sinks, first from the Asp, and then from the DBE attacking the Asp? Very short vid.

https://youtu.be/ManvERCz6QI

That was in 2.1 and I don't recall seeing those before, though I'm not usually observing others in combat. I was actually reviewing this video for something else I thought I saw, but I think those were just rail gun effects or something else.