The texts with Obama were apparently regarding the Hillary email investigation. I don't think there's any contention here that the evidence is real. The opposition has tried preventing the release of this information to the public and have even gone so far as deleting evidence to obstruct the process, as with the texts from the FBI officials.
What's happening now is a far contrast from the allegations of Russian collusion made against the Trump campaign, which were constantly reported on and hyped up for more than a year by the MSM, in spite of there being no concrete evidence provided to support the claims. In this case, the public is being given tangible evidence (as they should), whether you agree with it or not.
You can make your own subjective interpretations of it, but the people that are trying to release this information already know all of it, and are doing so in a strategic manner they feel would be most effective. If it were released all at once, important details could get swept under the rug by another big event/story in the daily news cycle or the content matter may have the effect of being too much to handle at one time, which would occlude from the whole purpose of public awareness.
Doing it gradually/carefully over a period of time has the advantage of allowing the public to digest the information and mentally prepare themselves for bigger revelations. If something is truly being misconstrued it can be legally disputed in a court of law.
Doing a slow release of "information" without supporting context or details slowly feeds red meat to his base and allows right wing talking heads to go into damage control mode to protect the President. Any review of sensitive information will come with a report on what found and what conclusion if any it makes. This has been a coordinated attempt by the Right to destroy the reputation of the people investigating him to call into question the outcome of the Mueller investigation. As seen in the primaries and the election of 2016 Trump when attacked will return fired and flood the NEWS with what ever he thinks will make his opponent look bad regardless if it's true or not. Remember this is the same man that had the most lies in an election by a landslide.