Not the same, no one should have any issue with the core developers developing segwig or lightning network or anything else they wish. The issue is that they have the power to decide or directly influence if it is part of bitcoin or not.
How is it not the same? Some employees of Red Hat can have the power to decide or directly influence if a change becomes part of the linux kernel. Some employees of the DoD can have the power to decide or directly influence if a becomes part of TOR. It is exactly the same; the people who have the most expertise regarding something specific generally are those who have the power to decide the changes and influence it. And when it comes to Open Source Projects, those people generally work for companies that can use their expertise with regards to the open source project, or their company made the project to begin with.
In the case of some of the Bitcoin Core devs and Blockstream, some of the Core devs have the expertise of working with Bitcoin, and thus they founded or were hired by Blockstream.
So by your logic Satoshi's concept of halving every 4 years is
foolish or the number 21 million is
foolish.
Function good/ Constant bad.
No, I never said that. What I said was that they think that block size increases as done by BU, Classic, and XT are a foolish way to increase capacity. I never said that functions are better than constants. If that were the case, then XT and BU should be supported, and they are not.
No I am saying you develop whatever you want but you should not have the power to decide or influence whether the feature you developed should be part of an open source project like bitcoin when your company will directly benefit if that feature is added to the open source project.
It was not just those who work for Blockstream who implemented Segwit and lightning and decided that it should go into Core. It was implemented and modified by multiple people, proposed by multiple people, and reviewed by multiple people, many of whom are not affiliated with Blockstream in any way whatsoever.