Although Sefardim are the majority in Israel, there are plenty of frum Ashkenazim. I find it hard to believe that it’s difficult for Ashkenazim to find food that has appropriate hashgacha. I could ask my daughter, but she’s probably asleep by now.
In Chutz L’Aretz, many who don’t eat gebrokts make a point of eating gebrokts on the last day. Do they use separate keilim? If not, how can they use them for the first days the following year?