Who said anything about them being for a 4th or 5th gen
The 3rd gens don't have TPMS.
I have talked to a lot of people running them and are very happy with them. Most wheel on a very regular basis.
With larger tires it gets harder and harder to keep them balanced for extended periods of time. Pending if they are Bias or Radial, if the weather is hot or cold, etc. When you air down a lot for wheeling, Your tire will slip a little on the wheel every time you do. This causes those static weights to be shifted slightly from where they need to be everytime you air down.
I have had this happen a lot in the past where a tire shop rebalanced my tires only to shift over the weight on the wheel about an inch.
A dynamic balance would allow the normal effects of constant aired down wheelin to not affect the balance of the tire because it is a "fluid" balancing, meaning it can change location regardless of the relation of wheel to tire.
Also when tire gets chunked up from rocks this will change your balance needed. If you wheel a lot of sharp rocks, (Arizona for example) you will see how brutal they can be on tires and that can mean perfect balance on the way to the trail and death wobble on the way home.
Toyota doesn't use them because for what the average consumer uses their vehicle for, its not as needed. Plus tire shops don't want to mess with spilling beads all over the place everytime they have to change a tire.
My beadlocks can be mounted in my garage so I will be the only one to have my hands on them. If I never had to go to a tire shop again I would be thrilled. I have rarely left a tire shop without a shimmy in the steering wheel from unbalanced tires.