firstly that kit is pretty dammed good for the price- go get one or two or three
about time that guidance material is put out into tourniquets and heamostatics, used correctly they are amazing pieces of kit.
anyone training should be up to date with new techniques, its essential but some people dont like change.
The role of the first aider has way developed from basic abc's now to near ambulance training, and its a good thing when used in conjunction with proper training- not learn yourself on youtube, if it goes tits up and you find yourself in court you wont win and you may face jail or financial ruin.
with that said I like youtube for learning, but not alone- get trained up.
as part of my job I am often part of the trauma team and get to use some ace kit and work along side some amazing people, but it is literally life or death.
as for splinting the most basic form of analgesia for a fracture is splinting, it provides stability in the injury and psychologically helps you deal with it and reminds you not to wiggle it around as it will hurt again
talking of splinting SAM's are ace, but if you have a mass casualty rtc for example how do you splint them all, goes back to basics and triangular bandages.
In a SHTF situation I am looking at a new cheep material which is water resistant and lightweight and normally used as an under floor barrier called equinox i think its brilliant and can be cut with scissors in any shape or size. I will report more on this in the next few days.
Splinting is good, very good so do it, in a SHTF situation it could mean the difference from failure.
look forwards to seeing your med kit, I will tell you about mine
keep the messages coming all good.