Pekak, the Ashkenazi rav of Sterling Forest in Lakewood eats machine shmurah matzah as a Brisker. He is not the only one. I know followers of Rav Aharon Soloveitchik zt”l from America who do the same.
Yes, Brisk in general is taking over the yeshiva world, the way Lakewood did. Most smaller yeshivos have lost their shtempl to either Lakewood or Brisk, and no longer have their own mesorah.
In Torah Vodaas, Rabbi Lichtenstein allows those who want to skip secular studies to skip them. Torah Vodaas kicked out the malochim in 1933 for refusing to go to secular studies classes.
(Not that he’s “real” Brisk but he has the frum hanhagos)
My frum cousin referred to Briskers as the shtoltz of Lakewood. Another cousin who went to AY told me he learned how to really read a piece of Gemara in AY, which was something he was lacking. So clearly there’s what to be said for the Brisker derech.
That said, most are still noiheg to fast on fast days, not like Briskers and chassidish women.