So why is it said that there is no accent in Russian then?
It is said there are no dialects in Russian. It's not true but the difference between cities is minute, and the difference between the countryside is also decreasing. There are differences in pronunciation, mainly in vowel reduction and something else. They are weaker than between villages and become weaker and weaker.
It means you can listen to the person speaking and say where he comes from.
You can say for example, "you come from the South of Russia, near Ukraine".
Just like I can listen to someone and say "you come from the North of England, near the Scottish border".
That's not easy.
hard ч, hard p instead of soft.
This, I don't notice either - I have to really focus to say it right. To me it is the same sound with only a very minor difference.
Americans say there is no difference between soft and hard L. Yet they immediately notice when a foreigner does not velarize his Ls. I think if you hear Swedish with soft Rs or hard Ls, you won't say the difference is very minor.
I haven't listened to the video yet, I just mentioned some features I heard in Lukashenko's speech and know from books.
But x and G are two different letters. It's impossible to miss....
Still many Anglophones pronounce [k] instead of [x]. I don't know if they hear like that or can't pronounce the sound.