All news outlets have been exposed for not doing the proper research and many, including right wing outlets, for outright lying, it's the extent to which they do it and to what extreme that is the issue. The sources that you link have been exposed as espousing outrageous claims on numerous occasions. No mistakes, or poor research account for that much misinformation. You reference sources that are obviously biased to the extent that nothing they claim can be taken to be credible, or at least very little.