Agree. The relevant concepts from the theory of stochastic processes would be "stopping time" or "expected hitting time". There are lots of relationships betw

Agree. The relevant concepts from the theory of stochastic processes would be "stopping time" or "expected hitting time". There are lots of relationships between the jump times of the Poisson process and subdivisions of the real line, so it's possible that the post is doing some version of a valid calculation, but without the right reasoning/understanding.