You're right, it is easier. But TFP are (I assume) more interested in adding meaningful content over stuff like this. We've seen this before with the removal of things like gun parts and LBD. Sure scavenging for that one gun part took time - and had an element of fun to it - but what did it ultimately add to the game? Searching for the Forge Ahead book took time and all it accomplished was arbitrarily blocking progression at random (*). What does another tool tier add to the game? A shovel is a shovel. We have the tiers that we do now because each tier presents some form of tangible progression with tradeoffs between each tier. What unique benefit would another tier add? Kinda just feels like ticking off a box on a progression list to me.
Give me more quests and enemies to fight so that I'm more invested in digging up dirt to make my base.
* I did enjoy the euphoria brought on by finding the book