How is it that the public knows about TSBs and such before Ford does...?
That is actually a pretty easy question to answer.
Most people would be shocked at the amount of information thrown at tech's these days. it is absolutely mind blowing really. If I were to print all the information published by FOMOCO on 2021 model vehicles. I am talking all service manuals, all recalls, all TSBs and all service messages the stack of paper would be approx 5 ft tall.
it is impossible to know everything in that amount of information, and the information grows daily. go back to the 2017 model year that has had 5 years of updates, reprints, recalls, TSBs, and the stack would be about 2 ft taller.
As humans we deal with what we need and don't really bother with what we don't. Having never worked on a vehicle with the pro-power on board option (yet) there is no real reason for me know this information.
The screen shot shown isn't a TSB but is a service message (might become a TSB later) of which probably about 100 are published weekly. average tech does not have time to read each one. Also the Ford system doesn't spit out technical info on a F350 when you are working on a F150 so again you have to need to information to get the information.
Service writers are NOT technicians and most don't know shit about vehicles, their job is to sell service/repairs so talking to one about technical info/repairs is normally a waste in futility.
Now that leads me to the other side of the coin, that would be what I call "the ingenuity of the stubborn American". (not necessarily an USA only thing, I just call it that)
Lets say you are a Medical Dr and you decide you want to remodel you bathroom. The simplest and possibly the most cost effective thing to do would be would be to all a flooring specialist and have them do what they do for a living and take care of the bathroom floor. BUT NO.............
There is a percentage of us the for what ever reason will research/learn and do it themselves. This used to involve going to the library but now is mostly internet.
The point to that little story is this, some of us enjoy finding/learning information outside of our daily wheel house.
When a tech or service writer goes home and has dinner they generally don't sit down and "research" more about vehicles. They need and escape also and "research" about what they need for their lives.
That is how the general public becomes aware of somethings before "professionals". I can do research and learn about new medical procedures that I bet my Dr. does not know about today.
Just last month my dishwasher broke, I have a pretty busy life (who doesn't really) and honesty logically I probably should have just went and bought a new one. But I wasn't raised that way and the dishwasher isn't very old. So i researched/learned, tested, diagnosed and fixed my dishwasher. Had to hand wash dishes for almost 4 weeks but I did save about $500, although it wasn't really about money. (also I never realized how much of a time saver a dishwasher is until a month of not having one.)