Cars in general have rigorous software testing that means the last update will run fine indefinitely, and most of the updates only change nice to have features, not core operations like the engine and drive train.

EVs are pushing the envelope by having some software updates that directly change how the battery and drive train work. Tesla is the one I hear going completely in on subpar testing for updates to critical components. I don't know if other manufacturers are doing nearly as much as Tesla is, so it might even be a Tesla problem more than an EV problem at this point, but as time goes on others will become more bold with increasing numbers of updates and lazier testing because it worked out for Tesla's market share.

An EV that doesn't have constant software updates can easily exist, and they should work fine until the frame falls apart. I think a portion of the EV market falls into that category, but don't really know for certain.