Tony Nitty who regularly contributes really geeky tax articles to Forbes is also of the view that no returns will need to be filed by these recipients. (https://www.forbes.com/sites/anthonynitti/2020/03/25/congress-reaches-agreement-on-a-coronavirus-rel...)

Having said that, the Center on Budget and Policy Priorities already called on the IRS to issue a public statement about the confusion the newsletter has caused, pointing out specifically that Congress, having learned from the mistakes in 2008, deliberately included the language in the code section to ensure payments can be made without these recipients filing returns, which could create unnecessary delays and burdens (to both the recipients and the IRS).

https://www.cbpp.org/blog/social-security-beneficiaries-shouldnt-have-to-file-a-tax-return-to-get-st...

Nothing is ever simple when it comes to taxes... this is just another proof.