If you’re a developer curious about how they block ads:
Listening via the Spotify Web Player using a privacy-focused browser extension (like uBlock Origin) is generally safer than installing executable files or scripts on your operating system, though it still violates Spotify's terms of use.
: Downloading patched binaries or running scripts that inject code into applications carries the risk of malware. Users are often advised to only use highly-starred, well-vetted repositories. Account Bans : Spotify's Terms of Service
Spotify No Ads GitHub: The Ultimate Guide to Open-Source Ad Blockers
Spotify typically sends an email warning to users detected using unauthorized clients.
Many host-blocking scripts require elevated administrative privileges (Root on Android/Linux, Administrator on Windows) to alter system files. Running unknown scripts with these permissions grants the software full control over your operating system. The Legality and Account Ban Threat