It's not weird that this article, which translates the technical firefighting and structural aspects of the fire for laypeople, does not mention a xenophobic conspiracy theory that has been rejected by the French authorities.
That rejection would be more credible if it came with an alternate explanation (none as of right now), or if it hadn't come while the building was literally still on fire.
Which part of the article I linked is xenophobic? Which part is a conspiracy theory? And finally, which part has been rejected by the French authorities?
It's in French and I don't have the energy to make a summary of it, but basically your original article is a mix of misreading and bad faith interpretations of an already biased original source.