Yekke, is reporting what a gadol says (leaving aside the question of who is a gadol)lashon hara as regards those who have difficulties with the statements/follow other gedolim?
[I don’t profess to know Hilchos Loshon Horo properly, but my answer would be:] No, it’s not Loshon Horo. Like it is not ma’aras ayin to do something halachically permissible just because others who don’t know Halacha think it is assur. As long as it is presented without any additions which display negative opinions of the reporter. If you say it in a way that shows your contempt, that is loshon horo. Not because of the information repeated, but because of the opinion conveyed.