Assuming the code that implements the containerization is 100% bug free and there are no container escapes. I would not bet my user's safety purely on that assumption.
This is as useful as saying that seat belts do not make you safer because people still die in crashes. Containers are not perfect but if you’re starting from the conventional position where you’re one wrong package install away from an attacker having arbitrary access to your account and data, they’re a significant immediate improvement and a good foundation for further improvement.
Yes, exactly. JetBrains fanboys will prefer to remain blind to it, however, not realizing that the free version of JetBrains isn't competitive anymore against VSCode.
People pay for JetBrains instead of the free VS Code, and there are reasons for that, like IDE features and quality. Anyway there is no need to start an IDE war here, use whatever works for you and your coding, but I am sure that a small company can't offer free stuff and survive like big tech can do, so as a paying customer I want them to survive and make good products rather to give free shit to people that don't want to pay for their tools.