Are there genuine objectors on FR? I wasn't aware of any.
The real objections to TOE aren't on the basic theory. There is simply too much evidence behind it.
The real legitimate questions regarding TOE are what it doesn't answer. How did life first start? What are the mechanisms that is life? etc. etc. Answering those questions might be like Einstein answering the Mercury orbit question, and it might completely transform the science. Force still equals mass times acceleration but now we know that energy equals mass. Newtons equations are still valid, but we have a much bigger picture now.
Not *inability* but *deliberate refusal*.