Welcome! & I agree 
There have been a few bursts of new & active players due to sales, updates, and the initial launch. With the addition of rental planets, players are spread out amongst hundreds of worlds. Communication from the devs really slowed down (they began working on another project - as is common for devs & studios to do).
Unfortunately, Boundless didn’t receive enough hype in the beginning (marketing, social media, streamers, etc) & most gamers have never heard of it. We do have some great creators & streamers. We have a few that are waiting for a large update that has been seemingly delayed.
I think the initial idea for the game was for it to be anything people wanted - sandbox, creative, multi-player, etc. However, I think the quality & abilities they’ve added to the game, point more to an incomplete MMORPG unlike any that exist. If some dungeons, bosses/mobs, more character customization, & player mods were added (I’m not saying any of this is easy because it’s not & it takes time), I truly believe it could be a massive MMORPG. I play Minecraft, RS, WoW, Albion, PK, Ark, New World… Boundless has a uniqueness & secret sauce that none of them have imo. Even to this day, years later. 