The article is suggesting that there was an assumed dynamic in designing these mechanisms for petitions and claims - that there is a threshold of cost (time and effort, mostly) that the petitioner is willing to pay for petitioning the government, and that this cost is, at least to some extent, minimizing frivolous or "lets try it even if it's a long shot" claims.

When the cost of such claims goes to zero, that assumed dynamic will no longer work.