No, it is not trivial but you don't have to share screenshots of extreme anti-Zionism to reference antisemitism - it's everywhere.
This org has already said that FiLiA do not share all of their views, meaning they support the radfem elements but not the Maoist/antisemitism. I do not believe that they knew they would be bringing those booklets to their stall.
And I don't see what sharing it like this achieved. I've seen it shared by women who have been in left wing spaces for decades where they'll have seen obscure booklets with this shit in published by tiny, extremist groups which few people, other than those that belong to the unit, extremist group will ever read.
What I haven't seen - and I hope did happen - is a sense that women tried to talk to the stall holder (other than Feminist Dissent who interacted with her). All this mindless sharing does is push extremists into more extreme positions, which is the last thing we need in women's spaces and more general society at the moment.
These women are young and still learning. What they've learnt isn't that women who find this material distressing will sit down and talk with them, which was a huge missed opportunity by the photo takers and SM sharers, IMVHO.