Disagree, although I do think they've overused him. His appearance in an alternate timeline future at the end of season 1 was a nice idea to nod to Kirk's role in the prime timeline version of those events. But bringing him back again twice more in the first six episodes of season 2 has made him feel less like a cameo and more like he's becoming part of the main cast.

Lost in Translation - where he interacted with many members of the Enterprise crew (as opposed to just Pike or just La'an, and both times via timeline shenanigans) - felt particularly egregious. Although I did enjoy the episode.