After the meraglim gave their negative report on the Land of Israel, the Torah says (translations from Sefaria)
וַיַּ֧הַס כָּלֵ֛ב אֶת־הָעָ֖ם אֶל־מֹשֶׁ֑ה
Caleiv hushed the people before Moshe
Rashi, citing Sotah 35a explains
אל משה. לִשְׁמוֹעַ מַה שֶּׁיְּדַבֵּר בְּמֹשֶׁה, צָוַח וְאָמַר "וְכִי זוּ בִּלְבָד עָשָׂה לָנוּ בֶן עַמְרָם?!" הַשּׁוֹמֵעַ הָיָה סָבוּר שֶׁבָּא לְסַפֵּר בִּגְנוּתוֹ, וּמִתּוֹךְ שֶׁהָיָה בְלִבָּם עַל מֹשֶׁה בִּשְׁבִיל דִּבְרֵי הַמְרַגְּלִים, שָׁתְקוּ כֻלָּם לִשְׁמוֹעַ גְּנוּתוֹ, אָמַר "וַהֲלֹא קָרַע לָנוּ אֶת הַיָּם וְהוֹרִיד לָנוּ אֶת הַמָּן וְהֵגִיז לָנוּ אֶת הַשְּׂלָו!":
אל משה means he silenced them that they should hear what he was going to say about Moses. He cried aloud saying: “Is this the only thing the son of Amram has done to us?!" — One who heard him thus speaking believed that he was about to speak to his disparagement, and because they had something in their mind against Moses through the spies’ statements, all of them kept silent to hear his disparagement. He, however, said: “Did he not divide the Red Sea for us, and bring down the Manna for us, and collect the quails for us?!”
My question is why did Caleiv mention the שליו, or quail? I assume he's referring to the incident in last week's parsha with the quail (Numbers 11:4-35), that wasn't for their benefit like the other miracles he's describing. That was a punishment that killed members of the Jewish people
הַבָּשָׂ֗ר עוֹדֶ֙נּוּ֙ בֵּ֣ין שִׁנֵּיהֶ֔ם טֶ֖רֶם יִכָּרֵ֑ת וְאַ֤ף יְהוָה֙ חָרָ֣ה בָעָ֔ם וַיַּ֤ךְ יְהוָה֙ בָּעָ֔ם מַכָּ֖ה רַבָּ֥ה מְאֹֽד׃
The meat was still between their teeth, nor yet chewed, when the anger of the LORD blazed forth against the people and the LORD struck the people with a very severe plague.
Now you could argue he's referring to the first appearance of the שליו in Exodus 16:12-13, and while their request there for meat was inappropriate we don't see that שליו as being a punishment. However I find that highly unlikely, considering the proximity of this parsha's incident and the שליו of punishment, mentioning it should upset the people not make them grateful to Moshe.
Important to note Rashi adds on the gemarra, which doesn't mention the שליו, so this is more a question on Rashi than the gemarra