My Bubby (from Russia & very poor) said they only ate Shmura Matzo in Meshbish, BUT, unless you were male & over 13, no one else ate the matzo during Chol HaMoed, everyone else just ate potatos. And on Yontif, they only used 1 matza a meal.
We have been using ONLY Shmura for 40 years. But it was so expensive years ago, that there was a trade off – my kids did not get new clothes for Pesach, they had to wait for Shavous. It was a true sacrifice to only use Shmura. Today, it is much, much more affordable. One of my Sons-in-Law, who bakes his own, spends $100. a kilo, for the Matzah. It is for him, and everyone at Seder, the rest of Yom Tov, the rest of the family eats “regular Shmura.