I also think it’s highly likely that Trump was just eating fucking cheeseburgers and yelling at Hope Hicks for forgetting the machine, acting like cable news was interactive, and generally acting like he has early dementia while like 1/4 of the people in his campaign were on the Russian dole. And vaguely this just continued into the Presidency to some degree.
That said, if his campaign collaborated in any way with the hack on the DNC/Podesta/whatever, whether that’s asking for it, using the information prior to it being public, coordinating with where and how to leak it, or even being aware that it occurred or was going to occur outside of “I read it in the paper/saw on fox and friends/etc” then a crime occurred.
A reasonable person can expect that something in the above might have happened, because Papa-D basically alluded to this with the Aussie dude in like May of 2016, and then turned states witness like a year later.
If any of that is proven, then its sort of immaterial whether or not Trump committed the crime, because he then tried to orchestrate a coverup and plainly tried to obstruct the investigation on multiple occasions. This scenario is similar to Nixon, who did not order the watergate break in, but tried to cover it up anyway.
IMO, this makes way more sense than the idea that Trump was too smart to get into trouble with the Russians, yet not smart enough to not obstruct justice for an investigation of crimes he was innocent of (which is still a crime anyway). Maybe it makes sense if he was instead trying to hide a bunch of other unrelated pre campaign crimes, like money laundering, that he was afraid would come to light as a result of any increased scrutiny.