Interesting in the sense that the views shared here are mostly about religious freedom and superficial knowledge about the WT organisation. I agree that most JW's are not extremists.
However, certain stances or directions from the WT leaders can be considered "harsh" or even close to "mental manipulation". Think about what they teach about who rules the governments, how JW's should first check what WT prescribes in various situations, regarding the "ban" on voting, blood transfusion, birthdays, other national celebrations etc. And how all governments will be wiped out once their version of Armageddon starts.
So, the WT has decided to present themselves on the outside as an open organization with spiritual freedom. However, in their magazine and inside teachings, their tone of voice is different. Look at their shunning policy!
I am not saying the Russian government or justice system is correct in this case, but I can see what their concerns are. According to Romans 13:
13 Let every person be subject to the governing authorities. For there is no authority except by God’s appointment, and the authorities that exist have been instituted by God. 2 So the person who resists such authority resists the ordinance of God, and those who resist will incur judgment 3 (for rulers cause no fear for good conduct but for bad). Do you desire not to fear authority? Do good and you will receive its commendation 4 because it is God’s servant for your well-being. But be afraid if you do wrong because government does not bear the sword for nothing. It is God’s servant to administer punishment on the person who does wrong. 5 Therefore it is necessary to be in subjection, not only because of the wrath of the authorities but also because of your conscience. 6 For this reason you also pay taxes, for the authorities are God’s servants devoted to governing.
BOLD is mine.
If a group claims to believe in the bible, these words should have influence on them. But WT teaches another gospel (from WT magazine May 2018):
Satan exerts authority over all human governments.and:
Satan and the demons use not only governments but also false religion and the commercial system to mislead “the entire inhabited earth.”In other words, everyone, every organisation, every religion is evil as they are ruled by Satan.
Based on this, WT make their members behave accordingly. May be not extreme to all but some consider this as extreme.