All of the folks there who fought on our side thought of themselves as present at the Battle of Stalingrad, not some other thing, and that was the case whether they liked or didn't like Stalin.
The guys on the other side, who fought againt our interests, also thought they were at the Battle of Stalingrd.
I think it was a Cornelius Ryan book where I first read about this part of WWII. He noted that despite meat rationing at home, canned Spam, courtesy of the people of the United States, was generally available to the Russian defenders.
They needed it. This was truly an horrific battle with every living nightmare possible in warfare.
It's time to leave it alone.
If it's "time to leave it alone" then why didn't they?
They did this to placate a certain political faction, they should expect a backlash from those who oppose reviving Soviet symbols.