This is correct. Yoshi-P did a read through of the Patch Notes when the servers were down for maintenance and he spent some time talking about SAM. You can find the translation
here with a followup post immediately below it
here. The two big standouts I found from the read through were the following statements:
So, Yoshi-P feels that Kaiten is an ability that is heavily restricting the design space for SAM and will make it difficult to develop the Job further in the future. Which sure, maybe there's some merit to that, I'm not a SAM main and can't be assed to do a deep dive into the Job to find out. However, I can clearly see that ripping out a part of a Job's kit and telling players "it's for the future" is fucking stupid because now there's a hole in the Job and a bunch of pissed off players. This is the kinda shit that should've come in 7.0
with the new abilities he's telling players to look forward to. Gutting the Job from 6.1 to 7.0 while offering nothing in return is such a bad idea, and it's embarrassing that a dev team that brags about "playing the game" and "listening to players" can fuck up so badly.