The "I want it like Windows" people are an issue. Actually they were always? Old and bad behavior patterns. This hits the responsible people themselves. I'm feeling myself bad regarding using plugins from Github which aren't packaged by my distribution. And these plugin managers make it to easy :(

Regarding Flatpak (which I wish success) and Steam (which already has a lot success) I'm feeling more worried. They want grow and add stuff but actually must be a reliable source.