Yes. This is literally written as DEPRECATED at all places where the "account" argument can be used:
getnewaddress ( "account" "address_type" )
Returns a new Bitcoin address for receiving payments.
If 'account' is specified (DEPRECATED), it is added to the address book
so payments received with the address will be credited to 'account'.
[... snap ...]
$ bitcoin-cli help getaccount
getaccount "address"
DEPRECATED. Returns the account associated with the given address.
[... snap ...]
$ bitcoin-cli help getaccountaddress
getaccountaddress "account"
DEPRECATED. Returns the current Bitcoin address for receiving payments to this account.
The account/user management should not be done at the wallet level but by another application/database.