I do not understand how creating more units (sidecoin) can be advantage.
I think SC + innovation + scBTC is better chain. And if it is better than MC then innovation will be implemented into MC.
Except that we know from experience that this is not true. MC ossifies or has unbreakable social contracts, so better doesn't get implemented into MC.
Instead what SC offers is that MC may 95% migrate to it and leave behind those that don't agree that the change is better.
it would've been alot easier to trust if Blockstream the for profit wasn't involved in MC core dev.
This.
As part of MC core dev, there is some control over the ossification.
FWIW, I think these are good guys and I like/trust them just fine.
Anyone can be subjected to coercive forces though. Not just greed coercion by gaining vast wealth, but gun to the head of your child or whatever can change one's mind about things. This is why conflicts of interest at centralization points are especially troubling. If you are in that position yourself, you may be putting those you care about at risk.
That they would knowingly accept such conflicts of interest, leads me to question their wisdom.
They may come to their senses yet.