I'd "be the change I want to see in the world", but considering the very thorough research throughout the rest of the wiki, it's a bit intimidating even just adding to existing pages. It's even more unfortunate because right now that poorly-researched speculation-fueled Fandom site is beating us right now in terms of updated content. I understand taking the time to be sure of accuracy, but it's a bit concerning that I can find more information about EVA Imaginary on the site that claims there are 5 Adams and Unit 01 isn't one of them [unless 3.0+1.0 confirms this and I just completely missed it]

3+1 totally did heavily imply there were 5 Adams with the 5th black cross at Ground Zero
I'm an idiot
My point still stands tho regarding edits and new pages

I personally just have somewhat low interest in adding material concerning 3.0+1.0. Ultimately it just depends on having enough people willing to put in the work. Sometimes you get someone that is very interested in specific aspects of the lore, like the mechas themselves, so that person will focus on that. I myself mostly add material about production, design and characters. It also doesn't help that we're not going through the pandemic anymore and I (or most people) don't have that much more time to work on the wiki. There is also, as far as I can tell, not that much demand vis-a-vis getting informed on NGE itself.