Yeah, I do mean, the Players Handbook is Human-only.
Not everyone is invested in FR. Your proposal "forces" non-FR groups (specifically groups with homebrewed settings) to have to purchase an additional book to gain mechanics for non-human options. That is a terrible idea.
"Forcing" gamers "to have to purchase an additional book":
Heh, I can picture the Hasbro board of directors wringing their hands in delight.
At the same time, I assume the following will be true:
1. Gamers can purchase the 2024 Forgotten Realms Guide for the Nonhumans options according to FR flavor.
2. Gamers can still use the species that are in the 2014 Players Handbook.
3. Gamers can also download a free update for the 2014 PH species with the new rules for Ability Scores and Backgrounds.
4. Possibly, the 2024 DMs Guide will list several Nonhuman species as samples for homebrew worldbuilding.
5. The Town of Blackmoor and the City of Greyhawk might be an additional 50th Anniversary Setting Guide with updated 1e flavor.
6. There might also be a different Setting Guide with a different selection of Nonhuman options, such as MtG.
7. Gamers can download the free 2024 SRD with a number of Nonhuman species without flavor, to flavor themselves.
8. Probably, gamers can download a free 2024 Basic D&D game with simple Nonhuman options.
9. Indy publishers will have other Setting Guides ready for the 2024 Anniversary Edition launch.
10. DnDBeyond online will continue to have its list of Nonhuman species, with SRD ones for free, like it currently does now.
11. All of the above will be accessible via DnDBeyond.