because of the content provided on that website. it looks as if it's maintained by a bunch of guys that are/have been in vpn business. seems they know what they're saying and then there's this name resemblance, too.
Well, I get that privacy.io was an Anonine reseller, associated with the Swedish ISP Portlane AB. The last snapshot of their site at https://web.archive.org/web/20141028140434/https://privacy.io/ doesn't look anything like https://www.privacytools.io/.
well it doesn't necessarily have to. "privacy.io" was a vpn service provider. "privacytools.io" seems to be a privacy/security oriented info site. i'm just saying possibly it's maintained by the same bunch of guys behind "privacy.io". but sure i might be wrong.