Once you understand that sidechains are just that "sub-coins to Bitcoins 21M controlled supply", then it is natural to see sidechains as part of the original Sound Money plan. They simply offer a mechanism to increase functionality without a hard fork. Period
But these guys think that sidechains are somehow reinventing the altcoin threat

They don't care or wanna hear about the innovation of 1:1 two-way peg, they are busy fighting the inexistant altcoin threat
Exactly...
The only feature a sidechain can add to the existing altcoin concept is decentralized exchange. If this is the only thing holding back the flood of investments into altcoins, than all of us primarily holding Bitcoin are fucked, because sidechains or not, it is coming.
no that's wrong that's what you think you are getting, read appendix A of federated pegs.
The SC protocol changes the incentive structure that gives Bitcoin its value. Miners will over time have to MM Bitcoin not for profit but for some other reason.
Decentralized Exchange can be done using existing technologies not need to introduce a change to the prototypical that introduces disincentives for miners to mine Bitcoin.
if there is was any chance that what i say was true student it be worth trying to understand why that is?
I'm not even sure what you are claiming I should be worried about, let alone whether it is true or not. HOW does SC break the incentive structure? Don't hold back on the details, I'm a miner, a computer scientist, I've read the SC whitepaper (including the appendicies), and I've been working with bitcoin technologies for 4 years. Give me something concrete to be afraid of that doesn't involve crazy cypher pumping shitcoins.
I thought I had, brg444 is making so much noise it was missed.
https://bitcointalk.org/index.php?topic=68655.msg9409835#msg9409835I forgot to add that miners if for profit, only those without Bitcoin savings should welcome MM SC as they get a better return on there mining investment and would be handicapped if Bitcoin diminishing block rewards were limited to Bitcoin the dominant Value Chain.
Looking at examples of past pool operators one may even be incentivized and financially motivated to lock value in the side chain wile doing a MM attack on Bitcoin.