Fruits harvested from a field on the kibbutz during this time of year

As far as I know, whether the person in question is exempt from tithing or not depends on the Mishnah and the Mishnah, whether the seventh is a demalka. And according to the Mishnah, which is not a demalka, but rather one must give up, if not one must give up, one must give up tithing.

As far as I remember, the dispute between the B”Y and the Watcher is about whether a Gentile has property to expropriate and not about whether it should be abandoned. That is what the fear is. Therefore, in the case of fruits owned by a Gentile, the obligation to tithe is indeed apparently dependent on this dispute, but there it must be discussed that the obligation to tithe does not exist in the fruits of a Gentile either. Only if it was from the land of Israel.
Question: They really disagreed on this too: https://bhl.org.il/%D7%AA%D7%A8%D7%95%D7%9E%D7%95%D7%AA-%D7%95%D7%9E%D7%A2%D7%A9%D7%A8%D7%95%D7%AA-%D7%91%D7%A4%D7%99%D7%A8%D7%95%D7%AA-%D7%A9%D7%91%D7%99%D7%A2%D7%99%D7%AA/
And the prophet decided to exempt from tithing.
Apparently, the question of tithing in the case under discussion depends on the question of whether the exemption from tithing is because of the sanctity of the seventh or because of the neglect of the fruits.