Considering there's 6 devs listed, all volunteers (as in assuming they have full time jobs), I'm amazed at how much progress has been made on much more important features, such as MD@HOME and actual server maintenance to keep MD up while traffic from COVID and KissManga refugees flood the servers.
Let's assume that devs only did feature updates on weekends, that's only about 2 days x 4 weeks = 8 days worth of development per month, per dev. That's such a valuable resource that is better spent on other features. We can only thank them for all the work they've put in already.
If say the MD team hashed out a definition for the military tag, they'd then be expected to do so for all the other tags and categories. That's a lot of time that will have to be put into research and discussion. Either that or a lot of time developing a new system to deal with community submissions, as well as needing moderation. Sure they promised it would be worked on like 6 months ago (or whatever), but that's only 288 weekend days worth of time, ignoring the fact that not all devs might have the skills to develop said feature. Nor have they been paid to do so.
I haven't followed how MD was created too closely, so take my guesstimates with plenty of salt.
@bigtiddyoneesan and @AbyssalMonkey "telling it like it is" is definitely a step in the right direction, but the basis of how "it is" should be set to be able to actually have realistic expectations. And the reality is that fixing tags maybe just isn't top of the priority list. Or it might be magically fixed tomorrow. Be patient. Even massive corporations with billions of dollars can't figure shit out (EA Games, Google, Apple); why expect the same speed of development out of what is essentially a massive fan-project?