You are completely missing their point. The plugin repo and updates are hardcoded to use WordPress’s servers, that’s the issue here. Yes, you can totally self host WordPress, you don’t need something like cpanel (in fact, I don’t see how it’s relevant to this discussion, and I think the last time I used that archaic backend was in 2015), but if you want access to the plugin repo + automated plugin updates, you are unfortunately impacted by this BS.
Why be rude to people who are just trying to explain the issue to you?
I’d be curious to know what benefit it has over just using RSS.