That entire site reads like "what if Elizabeth Holmes set up a power generation company?"

Reading up on the company on Wikipedia, it seems to be pretty much exactly that.

https://en.wikipedia.org/wiki/Brilliant_Light_Power

Yikes, it's BlackLight! I had no idea this joker was still around. For reference: this was popular snakeoil on USENET back in the 90's when I was in college. This is some really crufty nonsense, and I'm kinda shocked it's still being recycled.

The theory has not changed much since the original work by Mills in the 1990s but the experiments and engineering have overcome a lot of hurdles and there are now many experiments that match the predictions of the underlying theory and prove the existence of hydrinos.

Read the talk page too - there's been a lot of dispute about that page

This doesn't work. The universe was opaque for the first few hundred thousand years, even if there is a cycle, we cannot possibly see it.

We are not looking back into the past cycle, but we see mature galaxies that date from the previous cycle.

What you're saying doesn't make sense - not even according to the bizzaro theory you mentioned. Even if there was a previous cycle, there would be no galaxies left from it to witness.

I think you are assuming a big crunch?

No.

I watched a few videos about variable speed of light. I know nothing about this but it is fun to ponder different explanations for Dark Matter, Dark Energy etc.

You may like my silly theory (made with zero evidence) to bring back the Big Crunch Theory. Imagine that spacetime is a sphere, and the Big Bang happened at the "north pole" so to speak. All matter will eventually meet back together and recombine at the "south pole" after which a new Big Bang will happen. Absolutely zero evidence for my idea and it's probably impossible to prove anyway but it's fun to theorize.