Why does SGI hate the Shoshu priesthood so much?

Over at the SGIUSA sub, they are discussing how members should just take what they want and leave what they don't about practicing Nichiren Buddhism under SGI.

Someone shared a Gosho quote basically saying that if someone has the same belief as you in NMRK, you should never fight with or even criticize that person.

https://www.reddit.com/r/SGIUSA/comments/dhc8wt/oeshiki_commemorating_nichirens_death/?utm_medium=android_app&utm_source=share

The commenters take this to mean that SGI is accepting of its members being interfaith and practicing multiple religions.

But I've also read quotes by Nichiren that basically show he wanted to DESTROY all other sects of Buddhism!!! (These quotes have been linked many times, sorry not to link them again).

It seems that Nichiren was only protecting the followers of the Lotus Sutra and not other religions, though . So in our modern-day, we might say that Nichiren would have protected both the Shoshu priesthood and the SGI members.

But we all know how hard SGI has fought to keep the separation of the Shoshu and their own members. SGI is constantly belittling and criticizing the Shoshu. It seems pretty hypocritical, especially considering Nichiren wants protection of all Lotus Sutra practitioners, doesn't it?