

Requiring a support contract to receive continuing updates of software that was very publicly approaching end of support, with published EoL dates for years now does not break any laws.
By that logic, no support contracts are legal in the EU at all, and no product would ever be sunset.
I agree that the gatekeeping isn’t a good thing, but you should learn at least the basics of the CLI. It will give you a better understanding of what’s going on behind your GUI and makes troubleshooting and fixing problems a lot easier.
Definitely not required but it is absolutely a skill worth having.