I don't think renters vs owners is much of a real distinction in this argument. Landlords still own those houses and still want people to live in them. I would think that in less than 5 years, the idea of installing a personal charger will be no less an assumed requirement for available appliances in a house as a fridge or water heater. It's not like it's really that much of an expense for a landlord, which would cost about 1-2 months profit on rent. ...and I mean, you're specifically talking about CA here. It's already such a low threshold to install these things without incentive, and now you have pretty clear, direct need to do it.
Really, absolutely no big deal. If an LA landlord wants to rent their houses out in the next 5 years, and certainly within ~15 years, it would be considered hilariously stupid not to install a charger and really more just irresponsible than anything.
Consider this: from a world perspective, it's already kinda "weird" that renting a house or apartment includes the assumed use of appliances. In pretty much all of Europe, the individual owns those, and takes them with them. That's sort of the first week of a new rental: either go out and buy your own appliances, or arrange getting them moved from previous place to the new place. ...and it's the same with buying. Hell, even with the kitchen, it's not uncommon in some countries to expect all of that to be torn out on a purchase and completely bare when you move in.
Point being: those of us in the US have a lot of unreasonable (or maybe just uninformed) expectations in certain ways when it comes to renting/owning/living. That's fine and all, but what's really strange is to assume that expectations can and will remain stagnant over a generation's time...especially with the type of exponential advancement in technology that those of us alive today have actually experienced over the last 40-50 years.