Third-party Tools Can Negatively Affect Players Not Using Them

[Mosha]

It would, if you are not producing any numbers to read from, removal of the battle log and its way to store data on your PC.

It doesn't read from the battle log it reads the network packets removing the battle log would have zero effect on how ACT gets its data. For example: the battle log doesn't log the player's position but ACT is able to capture that as proved by the replay feature on fflogs.