Perhaps that's so. It certainly doesn't directly address scientific issues with the exploration/exploitation of Venus and/or Mars.
Rather, the main theme of the blog post seems to be:
The challenges of exploring Venus/searching for life are metaphorically similar to current issues here on Earth (climate change, SARS-Cov2, etc.), while Mars represents the endless expansion/frontier attitudes of 18th-20th century mercantilism/capitalism.
As such, I found the post to be more about how humans think about solving problems and a plea for a new kind of thinking. As Lincoln put it: "The dogmas of the quiet past, are inadequate to the stormy present. The occasion is piled high with difficulty, and we must rise -- with the occasion. As our case is new, so we must think anew, and act anew. We must disenthrall ourselves, and then we shall save our country."
While I certainly don't disagree with the sentiment, I'm not convinced that the metaphor is a good one. Exploring/colonizing/exploiting off-world resources, regardless of where they might be, will require us to "...think anew, and act anew."
All that said, perhaps I completely misunderstood the blogger's point. But I don't think so.
Edit: Clarified the amount of sense I think the author of the blog post was making and cleaned up my own verbiage/reasoning.
That's a good summary of what I was trying to say, and I appreciate the effort you put into deciphering my rambling style. This wasn't a post I expected to get much attention!