Because we’re talking about active players that logs in for only few minutes to 1-2 hours max daily and that’s 40k ish. We’re not talking about people who quit the game long ago.
It’s not clear. He’s talking about CCU. If the game is lacking content currently and there’s only boring dailies to do, it’s expected people will be online less time per day and fall down on rank as people play less.
But still, it doesn’t change that the game has 40k unique players as of the 2 last weeks and been keeping the same similar numbers for quite some time for now.
That’s why Total Player Count and CCU are complementary to each other. If you talk about both you can pass the right information.
If you pick only Total Player Count you’re overestimating gameplay experience.
If you pick only CCU you’re underestimating gameplay experience.
You need both to pass the right information.
Also, quite important piece of information. ToS has a too easy leveling system so it’s natural for lower level dungeons to get empty queues fast after hype / new content weeks.
Not finding players in lower level dungeons doesn’t necessarily means those players quit. It can just means they’re now over level 300 in the “end-game chores”.
It’s a content problem and lack-of-new players problem. Getting levels higher than 300 doesn’t make you go out of the 40k unique players count.
Also, DG300, in Klaipeda at least, still almost instantly queues (<2-3min). I’m not sure about smaller servers but for more populated servers this is likely to be even faster.
But, now…
If you talk about CCU as Total Players and “heh, ToS has 3k players and can’t find dungeon queue” without any context, sorry, but you’re most likely just trolling and/or doom posting at this point (and not even playing the game) and ignoring what everyone else said.
If you feel bad about people correcting you when you try to underestimate and meme with numbers, just try to use correct ones and give context to what you’re talking about.
Why don’t you do that?
Oh wait, if you starting giving out context you can’t meme because you’ll contradict your own arguments because you know you’re overestimating the issues 
P.S.: Population issues exists, they’re serious. Overestimating and memeing with them doesn’t help, unless you’re just a doom poster trying to drive people away or demotivate them.

