The author is clarifying that their friends were only able to access it because the author gave them the email/password, because the author wants to illustrate what someone who did have your email/password could see.
What's relevant are the sentences that come immediately after:
>, but Amazon-owned home security company Ring is not doing enough to stop hackers breaking into customer accounts, and in turn, their cameras, according to multiple cybersecurity experts, people who write tools to break into accounts, and Motherboard's own analysis with a Ring camera it bought to test the company's security protections.
Then the author goes through some instances and tools built to hack Ring passwords.
IOW, the author isn't claiming that Ring is insecure because someone who he gave the email/password to is able to login. The author is showing the kind of information a person who has your email/password can access, and then is showing how easily it is for someone nefarious to get that information.