I've been an EN user since 2010. Yes they have had some problems and I have even tried to jump ship (as recently as last fall when I gave DEVONThink a go). I keep coming back though. I've yet to find anything that touches it in terms of features and functionality. Only ones that come close are OneNote and Notion. OneNote is fine but I don't like they way it handles organizing data. I prefer a nested hierarchy which I can get with tags in EN. Notion covers most of the bases but its an electron app and its SLOOOOOOOOOWWWWWWW if you have a lot of notes in it. Takes 30 seconds for the mobile app to open and be useful for instance. Thats a dealbreaker for me. I need to be able to get a piece of knowledge on the go fast. If you can't give me what I want in less than a few seconds you go in the bin.
EN has the advantage of being available on Mac and Windows (and Linux w/ Wine), allows you to capture from literally anywhere and has a fantastic and fast search. You can encrypt notes. You can schedule notes. You can make todo's. Capture emails. Scan documents (and then find them with OCR). It's got a very usable api to integrate it into any part of your workflow they don't cover. I dunno, I've tried em all and EN is still the best IMO.
ps. I've been using org mode lately too. That _might_ be what finally gets me off EN but the mobile experience just isn't there yet. Beorg (iOS) is great but still pretty short on features. Especially capture and search.