Let me just break that whole post down for you.
So you, a user, had to remake your modpack after (I'm assuming here, as you don't give an explanation for this.) developers hounded you for not getting permission? Do you not see anything wrong with this at all? Who is this mysterious 'he'? Nobody can make you take down your modpack and restart it except for you. You don't need to listen to the dev's every whim and follow them to the button.
You don't have to take down your modpack because mod developers got mad at you.
Once more, you don't actually have to get permissions. There is nothing the mod dev's can do about it other than whine.
It is not illegal to use mods without permission. This has been proven again and again, and the whole argument has been done to death. If you still think that it's illegal, I'm not going to try and force you to change your opinion, I'm just going to think that you're an idiot.
What happened between Forestry and Technic was that Sengir acted like a spoiled child, never once speaking to the Technic team. Again, this whole thing has been beaten to death, and the facts are out there. Whether or not you choose to find them is your own doing.