You should be using a password manager that encrypts and decrypts passwords only on your own devices and only you have the decryption key (aka master password) with well vetted strong encryption. If that is the case, you should have no problem storing the encrypted passwords anywhere. You should even be able to post the encrypted passwords publicly. If not, you are using the wrong password manager.
The good ones will be warning you that if you lose the master password, you are screwed, since nobody will be able to decrypt.