An explanation for Drivechains?

[OmegaStarScream]

I read a couple of articles[1][2] regarding this Drivechains but I didn't fully understand so If you someone could simplify things, I would really appreciate it. My understanding (which could be wrong) is that could be the same thing as ERC20 token for Ethereum?
I also want to know why both Peter Todd / Luke-Jr believe that the sidechains will be insecure as stated in the first article. I believe both these people have technical background so how come they 'misunderstood' something like this.

[1] http://www.drivechain.info/
[2] https://themerkle.com/what-is-drivechain/

[OmegaStarScream]

No one have an idea about this? I was also on BlockStream site to see their new satellite thing and I saw on the footer something about Sidechains too, are they the one developing this as well? I thought this was proposed by an independent developer.