Follica have research showing neogenesis from wounding and other research on humans showing increased hair density after wounding.
Rassman have not researched this and have not given any reasons to doubt Follica at least in public. Believe what you want.
For the record, Rassmann is a staunch advocate of microneedling.
@trialAcc: Rassmann didn't mean that they're programmed to minituarize in their location, although this can be easily inferred from his comment, but that the hair brough back will subsist only as long as you keep treating it.