I think you are wrong then. First, even Li-ion batteries are recyclable to a huge amount, usually the problem is that different manufacturers pack them differently without any blueprint and then it's much harder to recycle them. Then there are a ton of different chemistries with ones really harmless (i.e. using sodium instead of lithium) but they come with less energy density. Which isn't that important when it comes to energy storage for the network purpose but it's important when it comes to cars and portable electronic devices. Also different chemistries have different lifetime, i.e. LFP batteries have better durability and are less fire prone than the standard li-ion.