I will do my best to respond as kindly as possible, while expressing my opinion bluntly.
You are talking about pivoting away from one of the game’s fundamental designs. It is not that people are just flat out against solo content. It is that the game’s primary design has been some of the, if not the best group based gameplay in an MMO on the market… ever. For 20 years.
They have made the game exponentially more solo friendly over that time. And even in DF they still made it more solo friendly with more solo content. They are even doubling down in TWW with Delves.
The issue I see is that no matter how solo friendly the game becomes, the vocal solo players want a single player version of the game, where they can do all aspects of the game, solo. No matter how solo friendly the game is made, it isnt good enough for the vocal solo players. The game even made acquiring full tier sets able to be done solo. Tier sets with world content bonuses were also added through solo play. Still not enough.
Let me ask you to look at it this way. What is the reaction to complaints that there isnt enough multiplayer elements or gameplay to Elden Ring? That there should be the ability for people to group up and attack bosses in Elden Ring? That the developers of Elden Ring dont care about the group based content community, and the community has distain for multiplayer enjoyers?
This sounds silly. Because, fundamentally Elden Ring is a single player experience. The game is designed as such, and at its core, it is its best when it is that solo player challenging content. There are some multiplayer PvP elements, but that is very minor. But as a game, focusing on adding multiplayer content to the game, would be detrimental to the game experience and design as a whole.
That is why there is that disdain towards the vocal solo community. Because, no matter how much is done to add solo friendly content to the game, and give solo players the ability to have aspects of the game exclusively for that gameplay type, it is never enough.
It comes down to this. As a customer you are choosing to play this game. If the game is not offering the experience you want, you are welcome to voice feedback, but ultimately the game is not going to be able to cater to every players needs. If the player wants a solo experience focused game, there are many games on the market which are solo orientated and frankly do it better than WoW.
By choosing to play a game and complain that it isnt the type of game experience you want to play, even when efforts are regularly made to improve the experience for what you are looking for, yet it still isnt good enough. It starts to look like you are angry at an apple, because while it is a fruit, you want an orange and the apple isnt an orange.