This is absolutely NOT “about to change.”
So the periti assured the Faithful, when concern about Catholic teaching arising from the Second Vatican Council became an issue...
‘Holy Mass will remain Holy Mass of the ages, with but minor changes, and these arising organically...’
This they told us without hesitation; and with equal lack of hesitation they fabricated a rite bearing trivial resemblance to the traditional worship...
Anything can change, and history posits that it will...
First, much as it's true that as far as the post-V2 Liturgy is concerned, "the vandals got the handles," the Liturgy did remain the "Holy Mass" with its essentials unchanged, as you could see from comparing it as far back as the writings of St. Justin Martyr (100 - 165 AD)where we can see the essentials of what we indeed still have, and have always had, as the Holy Liturgy, a Sacrifice and a Sacrament.
Christ only, is the One who make Holy Liturgy "Holy." At every valid Mass it is He who is High Priest. And we have never ceased to have a valid Mass.
Second, your aphorism "Anything can change, and history posits that it will..." is a flat-out contradiction to reality. Many things do not change, cannot change, and history shows that they didn't, don't, and won't.