If you noticed the newest Soseki Scans don't get deleted (above 15). New translations from a dropped series are welcomed. If the chapters were re-posts from the group that left under the name Soseki Scans. They get deleted. Plagiarism is not a natter to be condoned. Must be new work. Not just PNG to JPG conversion. I did not check the dialog bubbles for differences. But just changing the translation does not justify it to be new work. There is a lot of work that goes into translations. Not just the language (native-to-X).
I am sure if another group took the base files of another group and translated (translated-to-newX ). They would do so with permission, or by consent. There is enough problems going on (IE: out right copying behind a paywall for one!). Operating as it now, "Everything is in a grey area". Groups with sensibilities will promote purchasing from the source and drop the series when the author decides to sell into a new market (English speaking). If you want to see how bad it can get refer to Anime. Anime is so grey area, it's almost black. From time to time the copyright hammer comes down. Then it's only on the extreme cases that it does. Let's give no reason for the eyes to be pointed in our direction.
So it does not help to bicker here about it. Move on or find it elsewhere.