I agree without a doubt.
I've played Blockland a while; since whenever 6k was a 'noob ID'. I ended up pestering my parents to get me the game for my birthday, based purely on the fact that I loved playing with 150 bricks on Slope. Multiplayer wasn't really that much of an appeal to me, since I liked building what I now see as spam, named small houses made of mismatched bricks which just about passed off as acceptable.
I then found that multiplayer WAS fun. The OP highlighted fort wars as '20 minutes travel time, 5 seconds fight'. It wasn't like that before. I used to love building a fort, simply to get shot at from random directions and pretty have no moving around in order to get into a massive battle. Now I find that genre somewhat less appealing, because the weapons are far better and therefore often more powerful, the limited community 4 years ago meant that everybody was nice to a lot of other people, and there is no server you can go on these days where there isn't an idiot with power.
That aside, I'm not sure what to blame for the fact that I barely play this game any more on a regular basis. The 'community' isn't big, yet seems to find a way to annoy every single player who wants a bit of sane discussion or similar. 36k IDs or whatever we're up to now is hardly a large quantity of people, yet there are much better prospects of finding a decent gaming community on a forum of millions where there are EVEN MORE people acting like idiots.
I'm hopeful for the future though. A lot of servers rely on either mods or terrain/interior maps, and they will soon vanish completely, leaving the door wide open for new ideas using bricks. That way at least some of the good builds might be reused, and for any terrible work on a 'terrain' we can blame the server host for either making or using it or both.
Meanwhile, I have better things to do than play around in servers alongside several thousand people who feel like making everyone else miserable is fun pasttime. I know there's great players within the rabble that has developed, and it's a shame such a large chunk is either gone or overwhelmed by a tide of ignorance.
We need a larger community, well actually we need a bigger part of the community being the ones who create Add-Ons. Look at minecraft, it took off because of the anount of mods and extensions that came out with it, imagine Blockland having all of those mods.
Minecraft only gained a larger community because by the time it hit retail it had a playerbase of more than a thousand who could advertise, and even when you had to pay it was incredibly cheap. It now has 5 million registered purchases of the game - that's insane.