I don't know that Dak would be all that happy about this at all. There was no bigger fan of Dak in the building, and he had a really big role in bringing him here. And regardless of what happened, the job Linehan did in 2016 with him was nothing short of masterful, getting a 4th rounder ready to play at a high level with pretty much no lead time.
Mac Engel wrote an interesting column about how it's hard for an OC to look like a genius in a run based offense, and it's especially hard when your QB misses the occasional big plays that you are able to set up perfectly.
https://www.star-telegram.com/sports/spt-columns-blogs/mac-engel/article224138555.html
Linehan simply smiled and went down with the ship as Dak checked-down his career into the toilet. The next OC may not be quite as quiet about where the problem lies if the offense remains a problem.