Is there a way to send ether from several input addresses in one transaction WITHOUT the use of smart contracts? I wish that different transactions could not be linked to each other. A similar question has already been asked here, but perhaps something has changed since then.
In Ethereum it is not possible to create a transaction where the Ether originates from multiple addresses without the use of smart contracts.
An Ethereum 'message' always has exactly 1 source address and exactly 1 destination address.
Nothing has changed in this regard.