The founder (Daniel) has been involved in a number of businesses. If you had read his description, even just glanced it at for more than a second, you would have seen a fairly long list of businesses with which he has been involved. He is the co-founder of visualize.me, the founder of Everyguyed (a men's publishing network), and the co-founder of a design agency, amongst other things. I can't speak to his experience with M&A, but it would seem unlikely that he would have a hand in running so many separate businesses without at least being exposed to some M&A experience.
As someone else pointed out, the advisors of the company also have M&A experience.
Also, Piccsy was founded at around the same time Pinterest was, so it's untrue to say that they are simply following in their footsteps.