If the feature makes folks more likely to use a 64 character random password for your Wi-Fi then I'd say it certainly does add security.
Presumably folks will be "sharing" the plaintext value of their Wi-Fi password with friends regardless of whether they use this feature or not, so it appears to neither increase nor decrease THAT aspect of Wi-Fi password security.
Presumably folks will be "sharing" the plaintext value of their Wi-Fi password with friends regardless of whether they use this feature or not, so it appears to neither increase nor decrease THAT aspect of Wi-Fi password security.