Is WebGL Fingerprint Defender safe?

WebGL Fingerprint Defender injects a script into every page to return randomized, fake WebGL values and counter fingerprinting.

On every site and subframe, the extension replaces the browser's WebGL getParameter and bufferData functions so they report spoofed graphics-card details and add small noise to rendered data, making each page see a different WebGL fingerprint. When a page reads these WebGL APIs, the extension passes the current site's hostname to its own background script to show a local desktop notification that a fingerprinting attempt was detected. No browsing data is sent off the device; all processing stays local.