"It was just his opinion."
Historically, not many words have been blocked here on exmormonforums. Discussions are pretty open. Sometimes a disagreement has become heated, even so loud as to shut down one or another speaker. But that is more or less the speaker's choice, since no matter how crazy or wrong a person is, they are allowed to speak. Lies, however, are often frowned down, and personal insults might bring a moderator's warning. If you check in the right places in our archives, your will find some shocking things, as far as vocabulary goes.
I guess Packer's vocabulary is suited for an age level that would normally be considered too young to be concerned with the subject matter of his pamphlet, or to benefit from it. When I was young and looking for helpful material to "explain things," the things I found were very clear about the physical and the physics, some social aspects, some biochemical aspects (not too technical, but technical enough for a young teen to understand).
Stalin made some once-powerful communist leaders into "non-persons".
The Mormon church, once an apostle has died, often makes his books into "non-books."
This is because the Mormon church is in constant flux, changing policies, changing traditions, changing its very doctrines themselves. So past prophets and apostles who taught those doctrines that have been changed, find their divinely inspired words demoted into mere "personal opinion"