Great stories out of Russia are hardly uncommon. Fading back into obscurity is the usual result unless one can get a grip on something tangible.
However this is not a totally unreasonable idea and it may have legs. It sounds like he can publish a number of rather simple papers based on the work to date. After all those specimens had a life span that had to be affected. The tests do not take too long either.
A body of work would establish a testable case and lifespans can even be independently tested if he wants to keep the bacteria secure. That would be enough to confirm efficiency.
So we now await followup. It really cannot be this easy?