Every Buddhist school could learn from this example. If I'm not mistaken, the dhamma is for everyone's benefit. If a Buddhist community doesn't reflect the demographics (genders, races, ages, etc) of the country it resides in, maybe it could do more to reach out to more types of people.
Honestly, I'm not particularly fond of wrestling with the texts or various meditation forms. At this point in my dhamma journey, I'd like simplicity and directness, therefore I've tried to focus mainly on the discourses directed to the laity like MN 41, SN 55.7, AN 11.12, and Snp 1.4.I imagine a dharma practitioner used to wrestling with sutras and commentaries, working on various meditation forms etc would likely find the SGI practice shallow.
You've piqued my interest, which isn't to suggest that I hope to convert into a Nichiren Buddhist anytime soon, lol. As far as I know, I'm generally content with my Theravadin practices. Regardless, I'd like to see first hand what's going on with SGI.
Thank you for sharing the details.