I don’t for a moment think all the trolling, or even half, was Russians but I can see that in a political down time they might jump in and amplify the negative comments about the film. They might just be disgruntled Star Wars fans as well. I don’t really think it matters. You can tell from this thread that the negative opinions are very genuine. We could argue the percentage, but does that really matter. TLJ is devisive. I don’t think a Star Wars film has been this devisive since TESB. When it came out few found it as good as the original. Now we love it. Who knows what 10 years will do to everyone’s feelings about TLJ.
Is this really an apt comparison though? I’ll admit I only have my own perspective here, but back in 1980 I only recall lavish praise for TESB and a very excited fandom. Admittedly I ignored critics (they never liked the movies I did anyway) and I’m sure there were dissenting voices as with any film, but I honestly never sensed anything that rivals the polarising effect TLJ has had (internet notwithstanding). If anything I’d say RoTJ was the one that started any such rumblings of doubt.
On the flipside Conan the Barbarian '82 was often written off as garbage in the media, and my schoolmates all thought it was boring and much preferred knock-offs like ‘The Beastmaster’. However over time CTB has been hailed as a giant in the genre, so I do see how this can happen.