Almost all polls are 'mainstream'. Feel free to link to any contrary poll.
As to NATO, once again, you refuse to address whether nuclear Russia ever credibly feared invasion of NATO.
Once again, I don't speak for nor can I mind read the Russian administration, the Ukrainian administration nor the Biden administration. I don't speak for nor can I mind read the European Commission nor the NATO hierarchy of recent Climate Change fame. I also don't speak for push polls and samples of 1,005 people.
You have refused to address -- your phraseology -- the various points I raised . You seem as adept at slipping away from specifics as are the current House Speaker and White House spokewoman.