Could be. The Japanese line just says 30 times. But 300 points per event would allow easy unlocking of additional legendary heroes, and everything I've read on the JP wiki seems to contradict that (they say that unlocking a 3rd legendary is quite difficult). Keep in mind that, if soul point growth were static, each additional legendary unlock would get easier (because you'd have already purchased the novice and intermediate hero prerequisites in the course of unlocking previous legendaries).
It's written in the JP wiki. Wikis generally depict demonstrable facts or community consensus. DMM players have a lot more experience with the game than most of us, after all.That's the general consensus? Whose consensus are you spokesman for? Are you sure those words mean what you think they mean?