No, it’s programming.dev being on the blink (or behind in processing incoming activities). You can see by comparing the post at: https://lemmy.world/post/20496937 (made by a programming.dev user) with it’s own copy here: https://programming.dev/post/20191915 - your UI might be too clever for it’s own good and make looking at those posts on their own instances difficult, but the difference is that there’s no comments or votes on programming.dev, but there is on lemmy.world (and other instances which have their own copy of that post).

If you were banned, it would show your profile with a ‘banned’ sticker. The error message is because it hasn’t heard of you at all, and isn’t going to resolve you because you’re not a logged-in local user.