>No catalog mode

Wrong: https://smelle.xyz/lynx/catalog.html

>shit loading while scrolling

I don't know where you got this from either. It scrolls perfectly fine on my end. Every page is available in plain HTML and it even works without client-side JavaScript.

Compared to other open source imageboard engines, it has the most features AFAIK. You can search through the list on https://imageboards.net/ to check out the different chans using LynxChan (NSFW warning: e.g., https://kohlchan.net, https://bunkerchan.xyz and https://8chan.moe are among the big instances).