I don't know if this is me being defensive, maybe it is-- and I'm not defending the cameos in a critical way, but rather I guess I can understand why they're there. Being a reboot with so many people upset it's not a proper continuation may have led to them feeling obliged to incorporate so many cameos and references out of respect or something.
I still say it should have completely been its own thing, and tonally it still could be, but when those old actors pop up, I fear it may feel disingenuous; again, an obligation, rather than feeling "right."
I think in films such as this, you have down time in the story where you could do a carbon copy of something from the original. Do it early, then deviate back to what your doing.
Based on that reviewer's description, Ed Helms is getting that station wagon about thirty times in this film.