CT had some pretty strange teachings. What is most significant was that he was known as a religious thinker. He did question many main stream beliefs, but many others did the same during his generation (sorry could not resist). He would debate openly.
The biggest difference between the early days and now is that the no one views witnesses as religious thinkers. There are not any significant spiritual or ethical issues that witnesses lead the debate on today. They are known as a fringe religion by some and as crackpots by others... certainly not as thought-leaders.
Both the current and past WT teachings have been proven false. But at least Russel provided information and ideas for meaningful interchange and debate.