Baerbock doesn't have a PhD, this was about a political book. Guttenberg did plagiarize in his PhD, and that was entire pages almost verbatim from other sources. That was an extremely blatant case.
I haven't seen the new allegations about Baerbock, I only looked at the original set of allegations. This is one of the original alleged instances of plagiarism:
Baerbock:
Der Wettbewerb scheint auch weltweit eröffnet. In Amsterdam ist ein 130 Meter hohes Holzhochaus geplant, in Chicago ein 228 Meter hohes und in Tokia eines mit 350 Metern Höhe
Spiegel:
Und der Rekord dürfte früher oder später ohnehin gebrochen werden: In Amsterdam ist ein 130 Meter hohes Holzhaus geplant, in Chicago ein 228 Meter großes und in Tokio eines mit 350 Meter Höhe.
That was the point where I didn't look further into it. I don't have the time nor interest to look into every case in detail, and if they consider this example plagiarism then I can't really trust their judgement, it's simply different than mine.
And Laschet had plagiarism allegations as well shortly after these ones, those news just disappeared faster.