I'm no track saw expert...So now that disclaimer is out of the way, I will say that I am a track saw believer when it comes to reducing 4x8 to manageable/useable sizes. I personally would do frame stock on a table saw. Dadoes/rabbets in large quantities would also be done on a table saw. If it is one or two cases, I would do them with a router. I think setup and tear down of a dado stack for a few feet of work is not efficient, but for a few hundred feet it is efficient. There is a series of 14 or so vids on YouTube (possibly the same as referenced above) where the individual does all the case work with track and router. It is impressive, but so is his collection of accessories that many may not possess. IMHO, the accessories (parallel guides, edge guides, etc) are what makes the workflow more efficient vs a table saw.