I think that is unlikely. Witness the concerted effort that has been underway to tie this to Trump and minimize Democrat affiliations. Apparently even the Wikipedia page was edited over the weekend to remove the names of Democrats.
I don’t know if it’s coincidence or conspiracy - but if you want to think it’s a plot then I’d suggest it is more likely a plot by Trump allies than Trump enemies. Trump knew the guy yes, and Acosta is blemished. But, Trump can take a few hits early (like in the Russia hoax) knowing he will be cleared in the end especially if it ends in the destruction of his enemies. The number of people who may be impacted by this is quite large and it includes the Clintons, Mueller, and who know how many others. And, Art of War style, if some prominent Democrats are implicated (or rendered lame) that aggravates the Dems and takes some of the wind out of their sails.
I kind of think it is unlikely too, but...I have learned never to discount the absurdity of the Leftist thought processes!