A semantic nitpick that is totally irrelevant. Most people on this website usually mean Gecko when they say they want to use Firefox.
- it protects what's important
- you can "Personalize your experience with new colorways."
- has Facebook Container
- syncs across your devices
Mozilla knows the actual engine isn't the deciding factor when trying to get people to change browsers.
Regarding mobile browsers specifically, their advantage over Safari here is blocking cryptominer scripts and autoplay videos: https://www.mozilla.org/en-US/firefox/browsers/mobile/compar...
* For some degree of "works", ublock origin is way better
So no, using the proper names for things is not a semantic nitpick. The commentator didn't not try to invalidate the parent's point, just show the language issue.