You definitely need to take responsibility and read the documentation for each extension that you decide to install. You may be surprised.
I would also disagree with the article and recommend that you disable telemetry, unless you specifically decide that you want that copy of VS Code and those extensions to send data. I understand the value of telemetry data, but I think that turning it on by default is unethical: software should not be written to automatically transmit data to remote systems without explicit user consent.