I would say that is something for the Galaxy dev team to address. They're the ones who should know best how everything needs to be handled.

Yes i use the browser regularly...and?
When i use a client like steam or gog, i am not using the browser.
As for the forums existing prior to galaxy...yes....and?

It doesn't need an argument. At the moment, it is what it is - GOG hasn't integrated the forums into Galaxy. I don't care, you do... yet, nothing's changed.
Vote for the wishlist item, spam the forum with your request, do whatever you feel like... there exists no sure way to get what you want. GOG is no mom&pop store (not anymore anyway), they'll only implement changes if they think it makes sense, economically speaking.

Well, if we're to split hairs here, both Steam and Galaxy incorporate the Chromium Embedded Framework (if I'm not mistaken). So, in other words, there is a browser inside the client.
As teceem pointed out earlier, you can always contact support with your query. And since you are using Galaxy, keeping an eye on the dedicated subforum can prove useful (not necessarily with this particular issue, but in the future).

Of course, which is why i hope more people will ask for this:)
It is what it is, but that doesn't prevent the possibility for change:)
Puttin' it under the microscope and cuttin' with a laser i see;)
I just want it to be more convenient for everybody, that's all:)

I can understand, there's nothing wrong with that, on the contrary. But it is what it is at this point in time. Galaxy is an everlasting work in progress.

And ¯\_(ツ)_/¯

Last question.
I've seen people on the forums mention that there actually used to be a community tab years ago,
know anyhting about that?

Can't say that I do.
I've only used Galaxy for testing purposes (a short time though) when it was at version 1.2 and then again at 2.0