Funny, last time this question was asked regarding the OSS version of VSCode and PlatformIO, they did not have PlatformIO in their marketplace, at all. This has been discussed multiple times at e.g. PlatformIO IDE not in marketplace
And now they have it but it’s outdated? Hm.
From my understanding, the “right” PlatformIO extension is only in the Microsoft VSCode marketplace version. The extension also depends on the C/C++ extension by Microsoft.