This isn't even surprising at all.
In the past, developing a server actually took technical knowledge and a lot of money to keep up with the server cost. Everyone was new to the game and the focus of development has been for the community and the overall game play experience. eAthena was active with an enormous amount of contribution effort from developers all over the world and people were coming up with crazy ideas.
Five years later, the developers has lost interest and old/new servers alike focus on how to salvage as much money as they can from there server. Development was place on how to create a generic server the features the same old custom that was copy/paste over to a new server. Updates were no longer useful as custom equipment and maps replace nearly %90 of the equipment and maps develop by gravity.
There isn't a developer in any server that is working on a project nor is the GM team active in prompting the server or organizing events. Every server consist of one lone-wolf developer and a bunch of 12 yr olds who don't know what it really means to be a GM.
Back that up with the tremendous amount of server scandals, frauds, and abuse; driven by greedy administrator.
Its ridiculous how anyone can complain about having no idea what to do anymore, when no one even gives a damn. eAthena is full of inexperience programmers and websites like RMS / other listing sites practically have little or no standards for what kinds of server are allow on the list.
Its so pathetic that servers are now "offering", "catering", "classical", or whatever bullshit idea that completely destroys the game. And with server owners offering advice to other server owners to "advertise" or "orientate" their server. You'll find yourself wondering whether people are actually honest about the game rather than creating a business model cash cow waiting to be milked.
TL;DR Version
1. Generic Server Features; lack of any innovation or development.
2. Server owners are driven by greed for donations.
3. Every server staff is basically a joke. Developers are inexperience. GMs don't know there responsibilities.
4. Decrease in constructive activity at eAthena; most experience developers have lost interest and everyone is out doing there own thing.
5. Server listing websites are only out for revenue by leasing space with little regard to server standard to list.
6. Server owners runs their server as a business.
7. l2ue is mad.