Heartland Institute is the same folks who believe that smoking doesn't cause cancer and believe climate change is a hoax, so forgive me if I ignore the first link - although I will grant you that large projects like this often have major cost overruns (the ones for nuclear power make these look like child's play though), so that is a valid concern for any project like this (but not necessarily a reason to reject it). On the other hand, unless you simply refuse to read the links I provided, we do know that windmills will have fairly minor impacts on sea life, people and the environment (they've been safely in use in Europe for decades, as per my previous post).
https://en.wikipedia.org/wiki/Heartland_Institute
Schnellenberger is a much more interesting source, IMO. I've read some of his work over the years, as he morphed from an environmentalist to a proponent of nuclear power and other things much more political. He's barely a scientist (has a degree in anthropology), but he does make some excellent points in some of his papers and the Tedx talk.
There's no doubt nuclear power could be the solution to much of our energy woes, but it just so happens to have the gargantuan downside of being a technology, which if it fails, can bring regionally to nationally catastrophic impacts to life and the environment. He loses major points with me for not even mentioning TMI, Chernobyl, or the immense problems associated with spent nuclear waste - and the risks of such plants with regard to terrorism or natural disasters, like Fukushima (or in Ukraine, which almost became a calamity in the war with Russia).
If done really well and safely, like in France, it can provide clean power for everyone - and power that isn't subject to the variations in energy supply that are a major issue for wind and solar - but he also fails to mention that much of the supply issue can be overcome with modern battery storage technologies and supply automation. But even if done well, nuclear will always hold risks that none of the other energy technologies have. He's also becoming quite political, criticizing "wokeness" and critical race theory, which he's welcome to do, but those actions weaken his "cred" on energy, making him appear to be very politically motivated.