Freerolls are indeed a good tool for beginners. They allow a player to become familiar with tournament poker without any financial risk and gradually build a basic understanding of different stages of the game.
However, this format has an important drawback — time consumption. Fields are usually very large, the structure is often fast, and the actual long-term profit is relatively low.
From a practical perspective, regularly playing freerolls is justified only at the very beginning of a poker journey. It is a learning stage rather than a stable source of income. As a player improves, their value decreases, and it becomes more efficient to transition to small buy-in tournaments with proper structures.
In other words, freerolls should be seen as a temporary tool: useful for starting out, but limited in long-term effectiveness.