The Short Answer
This page explains how this site keeps the fan project and the official game apart, so readers are never misled about which is which.
The Project Is Unofficial
The Dota 2 Mobile fan project is an unofficial fan-made adaptation, not an official Valve release and not the full PC game. Presenting an unofficial adaptation as a Valve product would blur the distinction this site exists to protect, and it would risk misleading readers into thinking a fan project carries Valve's backing. It does not.
Safety Comes First
Unofficial mobile files from unknown sources are a common route for harmful software to reach phones, and they can put accounts at risk when they ask for login details. Readers should treat unofficial files from unknown sources with caution, and should never take an unofficial file as a safe option.
Respect for the Rights Holder
Valve owns Dota 2. Content on this site will be removed promptly on request from the rights holder. If you are the rights holder and you want content removed, the contact page explains how to ask.
What This Site Does Instead
This site offers clear information: what the fan project is, how it differs from the official PC game, how real Dota 2 works, and how to start with the real game on PC. Reading about the fan project leaves you better informed than a file from a stranger ever would.