If you're interested in some constructive arguments why this article is wrong, please see a thread: https://threadreaderapp.com/thread/1516162437455654913.html
1. Pushkin supported the Russian unitary empire and subjugation of Ukraine.
2. Pushkin was instrumental in the development of the modern Russian language and is thus seen as symbolising the forced linguistic homogenisation imposed on Ukrainians.
The first argument has some explaining power as to why Ukrainians wouldn't want to have a Pushkin memorial.
The second argument is presented with a helping of founding myth: Russians are a homogeneous blob of NPCs, Ukrainians are autonomous and diverse individuals. This is a weak argument.
For a thread that rails about conflating history with modern reality, it strangely sidesteps contemporary linguistic politics. The modern Russian state has federal divisions specifically for non-Russian ethnic groups called republics which are distinct from oblasts i.e. provinces. And these republics established official languages of their own as expressly allowed by the Russian constitution. Ukraine on the other hand clamped down on the use of Russian and Hungarian. Ukrainian is a co-official language in Russian occupied Crimea but Russian has no official status anywhere in Ukraine.
And considering how unnecessarily long-winded the thread is, I wouldn't say it was particularly constructive.