Then why spam players with unwanted items in the first place?
Now you will probably say “so that players can go to town and salvage those useless items to get materials”.
But then I say: Why then not simply drop those materials directly? Why should players waste their time to get these materials by going to town to the blacksmith and then pick the ones without greater affixes? It doesn’t make sense how it is right now, because it is a stupid waste of time of players.
Also: One tormented boss fight results in getting loot that fills your whole inventory. So already for the second boss fight you have either to go back to town and salvage all the crap to able to pick up all the loot from the second tormented boss fight, OR you have to let items stay on the ground and making the screen unnecessarily complex so that newly dropped items “disappear”, because old items overlapping them.
The inventory is so small and gets filled up so quickly with items that it’s usually only very few minutes until you have to either go back to town or let items lay on the ground not picked up. How can that be a desirable state of the game? To me that is highly undesirable.
Also: “there is no need for a loot filter” is not a valid argument against a loot filter. In fact it is not an argument at all.
Also: The argument by Brink it would “only take a few seconds without a loot filter to clean your inventory” is a bad argument, because you also have to portal back to town every single time and then you have a loading screen and after cleaning the inventory you have to portal back to where you came from every single time and then you have a loading screen again. So the whole process from the realization that your inventory is full over going back to town to salvage the MANY unwanted items to going back to where your came from does not take seconds, it usually takes at least a minute. You can’t also assume that every decision while cleaning the inventory is an easy one. There might occur items where you might struggle with your decision whether to salvage them or not. So you have to think about that item for a few seconds at least to make a reasonable decision and to prevent salvaging an item that was better than the other version of the item that you already had. But in the end it all comes down to this: No, it does not take only seconds and even if it would take only seconds, these seconds would be a waste of time as well compared to the alternative of letting a loot filter do this process for you automatically once you only set the rules for which items to salvage, which items to sell and which items to keep.
Also: There are A LOT of players who DO want a loot filter, because for them it would be such a huge quality of life upgrade. And just because a few players do not feel that they need a loot filter, you cannot speak for others who feel different. Just because YOU as someone who does not want a loot filter, do not want a loot filter, you can’t claim that ALL players do not need a loot filter. You can’t speak for others.
And if a loot filter is what a lot of players wish as quality of life upgrade, then why not implement it as an optional tool that can be deactivated by those players who do not want a loot filter. To give players the OPTION for something regarding quality of life, can never be bad.