There's nothing i hate more than a group re-translating chapters that already exist.
BUT
1- The group "retranslating" is actually the original group since chapter 37. FlorieJane snipped it.
It was also done less than a month after the latest Mangasushi, too, so it was not because they took too long between translations.
FlorieJane's translation also started on chapter 128, while at the time Mangasushi's had only reached chapter 117. Meaning 10 whole chapters missing for the readers until Mangasushi released chapter 118 (with FlorieJane's chapters all already there but clearly no attempt from that translator to close the gap).
2- People do not usually like the quality of FlorieJane's translations. So... yeah.
I myself am glad that Mangasushi is doing their version of those chapters. And that they "announced" it by releasing their version of 128 two days after 127, making it clear they
would do them all themselves.