Difference is that your religion doesn’t really matter as long as you keep it a personal belief, it only becomes an issue if you try to make your religion political and use it in the public sphere to control people or abuse those within it. At that point it’s no longer a religious issue it’s a political or criminal one.

Political issues matter, they determine the allocation of resources and who lives and dies and who has power. They determine who gets an education, who gets to have kids, etc.

So caring a lot about politics and pushing your political view unapologetically makes a lot of sense. Pushing your personal religious (or irreligious) views is just annoying and cringe and betrays a lack of understanding about what actually matters and impacts the real world.