"Since Bitcoin is a digital currency with no intrinsic value"

is like saying the email protocol has no intrinsic value. I guess not many people understand the gazillion-and-one uses OTHER than currency or investment. Which is fine, because mainstream is adopting it in droves anyway.

"Many Mainstream Financial Institutions Are Very Wary Of Bitcoin"

Uhm duh? Mainstream financial institutions are the ones who have the most to lose because of blockchain tech so yeah, they are saying whatever they can think up to try to hold back the tide. I guess they never heard of Blockbuster.

"Investors' hunger for Bitcoin is destroying the planet."

I call this suffering from the "I have no imagination syndrome". Or we could call it, "Extrapolation is too hard" mindset. The author might be missing three important facts:
(a) Crypto developers are actively working on modifying existing and creating new blockchains that require less energy use.
(b) Hardware makers are actively working on making CPUs, GPUs, etc. more energy efficient.
(c) Developing new, more efficient, sources of energy is something innovators world wide are working on.