I know this comment is a bit of a meme, but in my experience “well actually you can already do this on Linux” is almost universally a calling card of an impending bad opinion.
Because the “do it yourself on linux” advocate tends to ignore all of the reasons why a person might prefer an easy to use, 3rd party managed services. Which could include not wanting to accept all of the compromises required to use Linux for personal computing, not having the competence to implement a Linux solution, or not having the motivation or time to maintain their own Linux-based services. So even when the solutions they advocate are perfectly decent, it tends to be associated with a lack of insight into how small of a segment people with the same competencies and preferences as them represent.
