Hi, they just replied to my enquiry, please see below
Hi there,
thanks for contacting us. The issue I think the theme author are right, but probably we can try to fix it because, in my opinion, we simply need to init again the load more after a filter was applied.
We have a trigger called yith-wcan-ajax-filtered triggered after a filter was applied, the theme author can use this to reinit the load more feature.