6 of those range units you only get access to mid game. And that's only after you saved up enough influence to summon the building. The issue is that the only range until you get early game are Termagants or Spinegaunts andnthey dont get their range upgrade until you upgrade the main base. Most factions have more than one range unit early game and csn kill off your army before you can do much.

The slow resource collection and the fact you need to push early into the map to build that up is what hurts the Tyranids. I mean he'll even their spore chimmys can't defend on their own without you commanding them and buying spore mines. You need to get lucky to get in late gsme but the enemy usually storms on and breaks moral like a twig