I happened to check the scripts I had loaded & spotted something I had not specifically requested. It was duckduckgo-privacy-protection.js. Guess a default search engine choice can do this.
Anyway, did a quick scroll, & saw they they are creating & check a webgl context to detect.
// We use this method to detect M1 macs and set appropriate API values to prevent sites from detecting fingerprinting protections
function isAppleSilicon () {
const canvas = document.createElement('canvas');
const gl = canvas.getContext('webgl');
// Best guess if the device is an Apple Silicon
// https://stackoverflow.com/a/65412357
// @ts-expect-error - Object is possibly 'null'
return gl.getSupportedExtensions().indexOf('WEBGL_compressed_texture_etc') !== -1
}
Probably safe, since etc
is kind of an obsolete compression type. Intel based Apple machines are probably fading fast, so might be an obsolete check itself.