I think a lot of people from financially poor backgrounds with little education, like my family, are very impressed by all the swanky buildings and shiny new things. Broadcasts, video links at KHs and conventions. My sister said when we left but it must be the truth look at how Jehovah is blessing the building work. This was after years of her complaining about her horrible elders and wondering when something was going to be done about all the problems in the congregations. I said shiny buildings full of miserable people treating each other badly prove nothing.
Since then I have been to the Vatican which proves my point but I enjoyed the art, which is why I went.