Because it's bull..all software has bugs, the majority of users are not experiencing the issues presented by the "plaintiff." It will be tossed so quickly.
I suspect that they won't be able to prove a huge class issue, especially if the majority were in fact under warranty and thus swapped for the wifi etc issues.
Apple might end up settling and doing a similar quality program for the scant percent of folks that brought in a phone undated to iOS 7 with a burnt out wifi and replaced out of warranty.
As for the whole 'slow' part that could get tossed under the notion that folks should expect some issues if they are using generations old hardware with newer software
----------
And because it is free and optional to upgrade (written on my iOS 6 iPad 2).
But it isn't totally optional. If something goes wrong and you have to restore, say for a passcode lock out, you have to get the newer software. iTunes won't do it otherwise.
And for a long time you couldn't get the older versions of apps. Either you updated to the new iOS or you did without that app.
All that said, I think it's something if a hulabaloo, except for this issue of the iPhone 4. I really feel like Apple needs to rein in the updates. You get two and out. So you buy an iPhone 5s, it comes with iOS 7, you get 8 and 9 then out. You want iOS 10, buy a newer phone. It's still better than some android phones where you get what it came with and nothing.
And I wouldn't object to being able to limit the downloading and installing of iOS updates in the Restrictions. What happened with LAUSD wouldn't have happened if they could have blocked running updates, parents don't have to deal with kids games not working cause it wasn't updated yet and the kid freaks out etc
----------
This is almost as stupid as the lady that sued McDonalds because her coffee was hot and she got burned from it. lmao
She had second and third degree burns because, as it was proven, they were brewing the coffee way over the guidelines for safe temps.
So not really the same.
Now if it was unproven with no doubts, that iOS 7 was causing the battery to explode it might be the same