When Did People Start Eating Shmura Maztos The Entire Pesach?

I don’t know if anybody has the historical data to show what percentage of yidden ate the various types of matza. Personally, my family used Streits Machine Shmura for the Sedorim and 18 minute the rest of Pesach. Slowly, as my sisters and I learnt in yeshiva we were taught that many held hand shmura to be a hiddur and we started using that for the sedorim while still using machine matza. The big change for us was tasting whole wheat hand shmura matza. We liked the taste and found that it was better for our digestive systems. We then switched to only whole wheat hand shmura and have continued using it since. As I stated previously, my children know that machine matza is not chametz and many others eat it for pesach.

“Gaon, is there a relationship between the work allowed on yom tov with the guarding of matzos as the Yerushalmi Betza 8:2 as discussed above?
“But if learn that yom tov you allowed to do work for food needs from cutting that the watching of the matzos would also be from cutting.”

I am not sure that is pshat in Tosfos – according to the Yerushalmi there is a pasuk and Tosfos just says pshat when…and then says another limud. See the very end. Also see the gemorah and Rashi in Pesachim 40A בצקות של נכרים it will depend in all shitos and the Yerushalmi can go by a diff shitah regarding Shimur Lishmah.

Also, see the Aruch Hashulchan (link below) who explains the shitos and has a total diff take on the sugya, he holds (see S 20) that according to the Rambam you need Shimur for all 7 days.

http://hebrewbooks.org/pdfpager.aspx?req=9102&st=&pgnum=65

Gaon, If there is a connection, the Rambam Hilchas Yom Tov 1:7 also paskens that cutting is only forbidden orally. The pasuk is talking about cutting on.