It certainly is. And he'd maybe use more classy words for it, if he ever could be convinced to talk about his sincere beliefs. But as I said, I'm fully convinced that powerful people believe all the out there things that regular people believe. We've seen so many examples of it over the decades, and it's otherwise very hard to explain why Starmer would keep doing things which are neither a popular thing to do or the right thing to do.
The simpler take you propose doesn't work for me, because "throwing things at the wall" suggest unpredictability to me, and Starmer has been very predictable if you assume what I have been assuming for a few years now. His actions are not the actions of someone who would try anything, quite the opposite.