are you asking if this will impact Google Voice? If so, I would imagine the answer is almost certainly that it will not at all impact Google Voice.

Google Voice works by acting as a proxy for outbound calls. You dial your friend's number, your phone dials Google, who in turn dials your friend with your Google Voice number displayed. Since Google is the legitimate carrier for your Google Voice number, I can think of no reason why they wouldn't be able to correctly sign the call.

Additionally, Google is listed as one of the companies that the 14 companies that the FCC appears to be working with (see the table towards the bottom of https://www.fcc.gov/call-authentication), so I assume they are planning to use it for Fi and hopefully Voice as well.