I'm not sure how much of it you can minimize. You can only control what you can control...and war/combat is chaos. Honestly it seems most things in relation to this over the years has been on treatment, not so much prevention.
Qualifier: Former US special operations operator that served in multiple wars.
My anecdotal take is there are many ways that shock and trauma can accumulate through training and war that are far beyond the minimal effects of an M4.
Firearms: While the primary weapons systems are the M4 and side arm (pistol), there are many weapons systems utilized by special operations such as sniper rifles, crew serve weapons, and niche small arms.
The M82 sniper rifle shoots a 50 BMG round. In either the bolt action or semi-auto versions they feel like you are getting punched in the face when you shoot them.
Crew serve weapons like the MK19 and M2 do pack a punch. The MK19 is a machine gun that shoots 40mm grenades. The M2 is a .50 cal machine gun. These weapons systems are mounted, but the percussion of them is still far greater than an M4.
More niche arms like the M249 SAW, M16 HBAR, full-auto AKs, M240 Golf, MP9, etc are not as mild as the standard M4/M16.
Blasts: There are many types of blasts encountered such as Mortars (inbound and outbound), Flash Bangs, Entry charges, IEDs, Landmines, etc. These do make your head ring if you are close enough to them.
In my own personal experience there are many other daily jarring events that aren't nearly as sexy to talk about. Riding in the back of a 5 ton will almost shake your brain out of your head. Riding in an LCAC (hovercraft) is like riding in a 5 ton. Doing boat work in Zodiacs will bounce you all over the place, especially when doing surf passages. Doing hydrographic surveys right where the surf breaks will pound you for hours and make you a little sick afterwards. When your chute opens on a jump, if jumping round chutes, will make you see stars...the landing is not a soft pretty one like rectangle chutes...you hit the ground hard.
There are many more ways your body gets pounded on a daily basis far in excess of the weapons you use.
I am running the Pi from a solid state hdd as I don't trust the sd cards. ATAK/FreeTak does run well on it. Funny you mention LoRa as I am using exactly that. I have a bunch of the TTGO T-beams (915 MHz) that I have paired up with old Android phones that run entirely off the T-beams/Meshtastic. They can be slow at times for messaging, but it really depends on the channel setting (short range vs very long range).
I was originally trying to set it up as the Kiwix wifi hotspot. But after playing with that I decided I wanted the pc to have more than one function so I switched to regular Linux with Kiwix.
So now instead of just Kiwix; I also have my handheld radio programming software (CHIRP), ATAK Server, microcontroller dev environment, copy of Collapse OS, etc.
I have been tinkering with a cyberdeck for a while now for off-grid usage, so this is a nice find for the hardware side. My main battle lately has been building out the software side; primarily Kiwix (https://www.kiwix.org).
Andrew McAfee did an interview last week w/ Sam Harris [1] that was a fun listen if you are interested in a conversational understanding before reading his book.
My wife had the same thing happen to her but luckily our bank clearly says that this is a password reset pin code (don't share with anyone) type of message along with the pin code in the SMS. So, my wife refused to give it to the person on the phone.
A better sms password reset flow would be to first send a text asking "A password reset has been initiated. Was this you? Reply: YES or NO". Then after a YES confirmation they send the reset code along with the same big "Don't share with anyone on the phone" message.
I have been patiently waiting on the Soffos[1] product from Fountech to be released to give it a try. I am assuming that there is a repetition algo in there as well.
Maybe it is a physical phenomenon like adrenal fatigue or brain injury, maybe it isnt; that is why people study it.