The Septuagint was the first time the Torah was translated into another language. And it was done under the threat of force. Being it was the first translation it was tragic in that it, for the first time, made possible for the gentiles to take our Torah, corrupt it, and later even seek to lay claim to it.
Once it was already translated, a future translation doesn’t add their ability to take it from us since they already had the first translation.
That all being said, some shittos in fact opposed the Artscroll and other translations.
Secular studies in yeshivos are somewhat limited and done to the extent they are mandated under local secular law. And often the yeshivos, in fact, do less than State law mandates, if they can get away with it. And some shittos hold that secular studies shouldn’t be taught at all in high school, if avoidable.