Same logic need to be apply in case Ukraine and Russian. Because you tell about VietNam war
Put Vietnam War to shown even in "democratic" USA, draft dodging can happen. So it is happening also in Ukraine and Russia. It is part of human nature whether in "democracy" or "autocracy" for some will dodge the draft, and each government will try to hold back the dodgers as much as possible.
The argument of which war is just or evil is a 'moot' argument as it is always depend on each other perspectives. We can see that on all US wars since cold wars until now. All can be seen from each sides perspectives from "evil" to "just". This is already debated even in this thread, from begining of this war. That's why it is a moot debate cause it is back to each sides perspectives.
This is not a situation that can can be graded as either that the western media is being even or uneven in their reporting, they are simply expressing the personal opinion of the writer and whether they are following the government line or not is up to them, unlike the autocratic governments.
This is true on one sense of more 'brute' political control. However even in west the political control can still happen, it is just the method is done more subtle. Look on how many in Western media potrait Ukranian goverment before Russian invasion, as corrupt and undemocratics (simple googling can shown that). How the treatment of Ukranian opposition being shown by heavy critics even in EU.
How that tone change in many mainstream media now showing how democratics and just Ukraine is, while their (Zelensky administration) treatment on opposition now basically pull under the rug by those media. Those commentators that still critical to Zelensky now being side line and some branded as pro Russian.
We can see how in the West political leaniences of each media control their naratives. Which is why the tone that 'critical' with Ukraine government or even bit symphetise with Russian now mostly in Fox for example. Thus shown politics on whose in control of each media in West can drive whatever the "toned" on how they want to presented this war (or any other topics).
If we see the Pro Russian telegrams we can see how they are also can be critical on the present Russian administration even some directly to Putin circles. This shown during Ukranian offensives in Kharkiv-Izzium fronts. However when they (Russian) done this, then those Western mainstream media try to pictures this as Putin loosing his grip.
Just shown why many of those who choose to sit in fences (outside Pro Russian and Pro Ukraine-Collective West perspectives), like myself, keep looking on both sides media but also keeping both of them on 'high grain of salt" perspectives. This is perhaps also why Russia not being 'isolated' by those outside collective west and allies.