Why does the roblo dev forum look strikingly similar to the thrive community forum

looks similar, asking why is it like some kind of format my small brain cant understand or is this deeper.

Because they’re both hosted with Discourse.

Oooooh, so it is a thing my small brain cant understand, thx.

We aren’t hosted by discourse, we just use the discourse software. Naturally all forums that use the same software (even if the theming is different) will be similar. The dev forum uses the default discourse theme so it’ll look similar to any other default discourse installation.