It probably is, but I think their main point is the protest against the age-old delineation into "GUI vs CLI" camps. I'm not saying that you're elitist, even if your statement might be interpreted as such (it's hard to communicate tone online but the quotations around "their workflow" could appear mocking), but regarding the structure of your statement, I had a "Windows users are all button-presser noobs" phase and would've typed something similar about the Git CLI if time was decently rewound (sans the kindness of a "use what you like" statement). They could be interpreting your statement as a propagation of the anti-GUI stereotyping.

Evidently they prefer GUI but can effectively use the CLI -- no one disagrees that the CLI is more functional.