Here is another misconception that seems to have been doing the rounds lately. Te isn't an opinion forming function - it doesn't use externalised parameters to decide the truth of something. Te is an action determining function. It's "opinions" tend to be limited to what needs to be done, how it should be done, and what the end results will be.
Ask a strong Te user for an opinion on something they consider to be of little relevance, and you likely to get a disinterested grunt (you would from me, that's for sure). A TJs opinions will most likely be formed via Fi instead. An ITJ will usually form such opinions rather slower than other types, while an ETJ will probably have a few very strong opinions on certain topics, and nothing else where.