Earlier quoted context omitted.
It’s open source.
VSCodium works fine for me too.
Fair move would be to put a well visible message into VS Code or their download pages, which informs the user: "If you need to check the build, you probably want VS Codium instead." -- Of course they are not obliged to do that, but meanwhile they are collecting telemetry to no end, from users, who are not informed about their main workhorse of their job. It does not seem right to me.
In general we need more awareness of telemetry, especially from companies like MS. Maybe at some point they will ship some telemetry update which the user "only needs to quickly confirm", before they can hack away and which opts into sharing code with their Copilot thingy. Before you know it, your solutions to problems are shared with other people, who will get a copy of your copy inserted. Lots of scenarios how this could go wrong, even if accidentally.