It does, SMS is considered to be unsafe and are being used widely. There personal information, MFA/2FA, activation codes, ticket info etc all being sent in clear text. Sure, not saying Google are the good guys and aren't harvesting information about you as a user, but they are less likely to be the ones wanting to hack into your account.So 10,000 people at google can read my post, but you're worried about another 10 or so while my message hops through the internet. Not sure that matters except to the uninformed.
Also it seems like RCS are end to end ecrypted, there are some rumors that it won't be on iOS which is something that's interesting to follow up on if it will be.
But, while RCS is more secure in some aspects compared to SMS (in terms of encryption) the feature set makes the attack surface much bigger.