The problem with EV battery disposal is mostly that there isn't enough used batteries for companies to want to be involved in recycling them.
Part of that is because, unlike your claim, in a lot of cases they're having perfectly long long service lives, even exceeding what we thought their lifespans might be (there are exceptions of course, like the early Nissan leafs)
And then other sources of used batteries, like from crashed vehicles, are being being reused more-or-less as-is for things like storage for solar power and home backups, which is preferable to recycling when possible
Eventually we'll probably hit a critical mass of used batteries full of valuable lithium and such that companies will be clamoring over themselves to start recycling them, and maybe at some point we'll even reach a point where no more lithium needs to be mined and we'll be recovering all we need from dead batteries. Basically the whole battery can be recycled these days, its just a matter of building out the infrastructure to do it, and once there are enough batteries waiting to be recycled, someone will see dollar signs and step up to that plate.
I generally don't recognize usernames and don't look at them too much
There's the guy who uses thorns (who I have tagged as Nigel þornberry)
There's maybe a half-dozen frequent posters who I'm genuinely not sure if they're masterful trolls, some kind of AI training bots, or just really need to go touch grass (preferably on their way to a therapist's office.)
There's one dude whose username just happened to stick out to me after having a random conversation or two with him and seeing him being a generally pretty decent dude around Lemmy, I tagged him "this guy seems cool" at some point, and at some point it occurred to me that he might appreciate knowing that, so I shot him a message, and sure enough he did. I now consider him to be a pretty good friend, which is a new experience for me, I've never really been one to have online friends, I (somehow) do pretty well at making friends in meatspace and have never really felt a need to seek out an online friendship.
There's a handful of people who have said some incredibly dumb shit that I've tagged (for example one dude who I tagged "Tankie, down vote and ignore" although the last few times I've seen him pop up it seems like he may have mellowed out a bit, so good for him)