That was from years ago.

Tesla used to sell cars rated by pack capacity. For example the 'P85D' was the performance model, 85 kWh pack, dual motor.
There was also a 40 kWh (cheaper) and 60 kWh version.
After a while they stopped building 40 kWh packs and just software-locked the 60 kWh pack to only have 40 kWh of usable capacity. I think for a while they offered an upgrade where you could pay to unlock the extra capacity.

I don't think they've done that in some time. I know when I bought my car (model y long range) they didn't even advertise the pack capacity nor was any upgrade offered. The only paywall thing I've seen with Tesla is FSD and they're pretty transparent about that. I don't think they're awful for paywalling it, because if they build the car without the FSD hardware it won't have other safety systems like lane departure notification.