I'm playing in a modpack and have found EMI to work quite well overall.
However I noticed the tags screen can get bogged down by unhelpful tags like #minecraft:trim_materials and other similar tags.

I know some people may want to know what items have that tag. However personally I would love to be able to hide it from the listing. I looked through the settings and had a glance at some of your customisation documentation and I don't believe there is any way to achieve this currently. The existing filters seem to only allow hiding or showing a specific 'stack' (item/fluid/thing), there seems to be no way to hide a 'tag' in the tag tab.

(Ideally I don't want to hide items with the tag, I just don't want it listed in the tag tab for those items.)

https://github.com/emilyploszaj/emi/wiki/Tag-Translation look at tag exclusions on this page it should help you achieve this.