Honestly that make you look like an ass.

You can "login with GitHub" on GitLab, and the minimum you can do for an open source project that is given to you for free is to make a tiny bit of effort to respect the maintainer choice. Really I assure it's _that_ easy, even I did it a few days ago.

If you are not capable of clicking on three button to login on a platform and say "thanks" to a maintainer on an issue that is already there, but have the time and energy to complain on HN, I'm not sure I would want you as a user.