It's absolutely true, but maybe my wording was confusing. If Miller plays in the AHL at age 19, his ELC will count against our 50 contract limit. He will get paid the AHL salary stipulated in his contract. But his ELC will extend by 1 year.
Both Anisimov and Grachev played in the AHL at age 19. Both of their ELCs slid, meaning that they played 4 years under their ELC instead of the normal 3.
(d) (i) In the event that an 18 year old or 19 year old Player signs an SPC with a Club but does not play at least ten (10) NHL Games in the first season under that SPC, the term of his SPC and his number of years in the Entry Level System shall be extended for a period of one (1) year, except that this automatic extension will not apply to a Player who is 19 according to Section 9.2 by virtue of turning 20 between September 16 and December 31 in the year in which he first signs an SPC.
Miller signed at age 18, so the exception doesn't apply to him. His first season playing under the SPC would be next season, at age 19, if he's playing in the AHL. If he doesn't play 10 games in the NHL, his ELC is automatically extended by 1 year.