Originally Posted by
Raelbo
That's a somewhat distorted version of the truth based loosely on fact, but completely missing the point.
Old raids require less and less people to beat encounters due to increases in damage and survivability as people outlevel them. At some point our characters so outlevel old raids that most of the encounters become soloable.
It's not a design intent so much as an emergent property of old raid encounters that they become soloable.
Now, because old raids have lots of things hidden inside them that people are keen to farm, people will keep going back to farm those things. If a raid can be soloed then it's simply more pragmatic to solo the thing.
However, in some cases you have a raid which is mostly soloable, except for one encounter due to some strange mechanic that requires 2 or more players. Such encounters are incongruous with the state of the rest of the raid.
This is why Blizzard have "made adjustments specifically to allow soloing old raids". It's to make sure that when a raid has become so deprecated that it is basically soloable that you don't one stupid encounter that isn't.
In no way is this evidence that Blizzard wants or needs to make all old raids soloable as soon as the next expansion arrives. It certainly wasn't always that way - I can remember needing to group up with a friend or two to do many raids from WoTLK and Cata after the new expansions arrived. It was a fun way to replay old raid content before it eventually got to the point of being soloable.
I am really not sure you have any evidence of this. Yes, soloing old raid content is a thing. And there are still going to be many raids that remain soloable. This simply adds back the intermediate stage of being able to do them with small groups.
But have you considered why people "enjoy" soloing old raids? How important is being to solo the content, so much as simply being able to access the content with relative ease.
I reckon the main reason is to farm for xmog, mounts and pets. We solo the raid because it's the most expedient way to farm content that is trivially easy to solo. "Forcing" people to form small groups with 1-2 friends is at most minor inconvenience but hardly a blocker for what people want out of the content. It also makes the content a bit less boring.
Another reason people enjoy soloing old raids is when it is still challenging to do so. It's fun pushing yourself to defeat a boss that still requires skill to solo. And again, once the raids become trivial to solo, this is no longer a thing.