Precice 2.2 is not obsolete in today's reality. Yes Stryde is announced and already being used, but it is not widely available worldwide yet, and is unbelievably expensive.
It cannot be really justified if a person who has enough money for Precice (even better Stryde), goes with external methods. Because using an internal nail significantly eliminates the risk of infection. In internal methods, small cuts are performed, internal nails are inserted and the cuts are stitched, so it is nearly impossible for infection to penetrate easily. Since there are no pins and open pin sites, no need for regular dressing change and dealing with mess.
Yes, external devices allow you to walk while lengthening and recovering, and Precice doesn't, but believe me after operation, most patients want it end as soon as possible, which is not the case with Ilizarov method, which requires living with devices for up to 1 year.
I would prefer using the wheelchair for 2-3 months and leave everything behind, rather than being able to walk with difficulties for 1 year, always risking infection and other possible problems.