Why would chargers break compatibility? The protocols are open standards, and there's a huge install base for them in both cars and dispensers. Even Tesla's NACS adopted the ISO 15118 protocol, the same as in CCS cars in US and Europe, which allows use of dumb adapters to keep backwards compatibility.
Sorry, I should clarify that I'm not worried they actually will, just that that charging seems like the most vulnerable point in terms of relying on outside software.
