When you open Galaxy there is a cog on the upper left hand side of the screen.
If you click on it, you can then click "share feedback".
Maybe if enough people do this, they will hopefully listen.

It leads to the support page when I click it.

And this is not only not a particularly constructive thread in and of itself, but also a duplicate of a similar thread posted a day or two ago that disappeared without any replies because of how lacking it is in any kind of constructive purpose.

Unfortunately, this is also in the process of disappearing in spite of having meaningful constructive feedback and positive ratings because of a lack of replies:
https://www.gog.com/forum/general_beta_gog_galaxy_2.0/open_letter_to_gog_and_message_to_support

Basically saying the same thing as you, but without the convoluted waste of time of opening Galaxy 2.0 to find a feedback option you have in the support page which doesn't require you to still have 2.0 installed (a problem many of those unhappy with it have already long since managed to solve)

I didn't get a support page. I got a feedback page specifically for Galaxy 2.0 .
It was nice to tell them directly how and why I hate 2.0, even if it doesn't really accomplish anything.
Are you sure that you clicked - share feedback ?
I am guessing that over the next few days, more people will have 2.0 sprung on them, and many will be unhappy with it.

Yes, I did click "share feedback". And it took me to a page IN THE SUPPORT SECTION of the site for sharing feedback. Which is also accessible pretty quickly through the main support page.

And yes, others will be unhappy with it - and already have been sharing that, here and elsewhere.

Make your voices heard by voting in this community wishlist topic: Allow users to stay with Galaxy 1.2