I actually don’t remember it being a big thing at all when I was a kid though of course it was historically.
The Death camps were not all liberated at the same time. The first Death Camp (in Poland) was liberated in 1944 - Auschwitz liberated January 1945 - Bergen Belsen and Dachau in April 1945. My late Czech grandmother who was in one of the camps and who was brought to the UK shortly afterwards by the Red Cross always celebrated V.E. Day - May 8 along with other survivors in her area in the UK - it being a date that was important to everyone who had been affected by the War. And it's a day that we her descendants always celebrate as a mark of respect to her and to everyone else who was affected by WW2
Without belittling the troops of any army in the war...the Russians were a formidable force that I very much doubt could have been beaten...certainly not for many years, probably not at all.