Sliding a few fire extinguishers down the slide is really not rocket science if you know what you're doing.
The stupidity is when you lose a million dollar aircraft because you want to save a few man hours here and there by not having a brake-man.
The second stupidity is having to pull a heavy fire extinguisher on foam from afar when your aircraft is loaded with halon ones in sufficient quantity to keep the fire tamed until the fire services arrive.
While a small handheld device may seem ineffective if talking about powder or foam, halon even in such small devices is very effective.
Here is a demo in very similar conditions as this fire:https://m.youtube.com/watch?v=Aw025Ho8KyM
Those halon extinguishers are not located around cabin crew stations for decorating purposes.
Making ground handling crews aware by training them and by establishing risk assessment procedures, such accidents should be avoided at respectable aviation companies.
Yesterday it was an A340, tomorrow it could be a brand new A359.
I hope that I didn't bruise your ego too much. But yeah, if you work in the industry, you could use additional training, as do most. I don't know of many ground handling crews who follow proper training, except at JAL where I see that even ground handling equipment needs to have wheel chocks installed when not operating, even for 10 seconds.
I can assure you, my ego is nowhere near being bruised. That aside, you seem to know a fair bit but are applying your knowledge in a rather odd fashion.
First of all, the laws of physics still apply, even if we're not talking about rocket science. That means, a fire bottle being released down a slide - however gently - will quickly accelerate to a high rate of knots, and you're suggesting someone should be at the foot of said slide, heroically grabbing hold of it without breaking an arm or leg in the process?
But first we need to get the bottles. They are usually stored around the aircraft, and having been advised of a fire by ground, you'll now have the brake rider assemble a suitable number of them at an exit, in preparation of subjecting them to a few of Newtons laws? Keep in mind, the guy upstairs can't see what's going on and you've now disconnected him from communication with the ground crew, who can
see what's happening. There are so many things wrong with this whole idea, it's difficult deciding where to start and end. And I really couldn't care less if it's a 30 year old 737 or a brand spanking new 747 - no assembly of bolts and bits is worth the life of a human being.
As for not following proper training, you're in serious need of a revision to your assertions. You're quite right JAL are rather anal about the way they do business, but there are many ways to run a railroad and their's but one of them. There is a general consensus of how to turn an aircraft, and in most parts of the world where ground crew are paid and treated decently, standards are generally pretty high. Not JAL perfect, but high enough to ensure a safe environment and, at the end of the day, that's all what matters.
As for my level of training, you may suggest and think whatever suits you best. Seriously, I couldn't give a flying fuck.
Signature. You just read one.