There are some people who do have very good ideas that are very translatable to the classroom. But I always remember when I was first teaching being so overwhelmed by so many new ideas coming at you all the time. You used the word guilt-ridden. Yes, and made to feel uneasy and somehow incorrect about what they are doing. Oh dear me, I don't want to be seen doing this in the classroom.
Crazy notions can take hold.
For example about never using any translation. Yes I appreciated the open attitude to this in your talk. After all, I need to translate when I'm learning a foreign language. Yes, it seems to be a rule that you must not translate and that there mustn't be any use of the foreign language in your classroom. Whereas, in fact, it is probably a good idea to be somewhere in the middle.