Yes, insofar as it also 'wrongly' depicts heterosexual families. All families, heterosexual or homosexual, are different so why would we expect and 'standard' portrayal of either a hetero- or homosexual family?
Do you mean to ask if Modern Family portrays homosexual families in a negative light? To which my answer would be no.
Modern Family depicts all the families as dysfunctionally wonderful in their own way. It is one of the few television shows that represents homosexual relationships within the context of family and home life, showing how beautiful this family can be and valuing it the same as all others. There are of course some stereotypes, as there are with ditsy Haley, fiery Colombian Gloria and grumpy older man Jay. They acknowledge and pay tribute to some of the real-life issues facing gay couples such as marriage legalisation and the adoption heartache in the first couple of seasons. It's normalising the family unit, which is often hidden away from popular television. Either way it's not meant to be totally realistic it's a sitcom
All three families are crazy. Phil's family is crazy. Jay's family is crazy. Mitchell's family is crazy. Actually I honestly think that Phil's family is crazier. I mean three crazy kids running around and a mother that always loses her mind. Whenever you watch this show you should not be concentrated on the fact that there is a gay couple. It does not matter. They are just as equal as everybody else in Modern Family.
Just because on the show the homosexual family is a little more dramatic doesn't mean that there are not real families that act that way. They did choose to go with something that stands out more but its only one depiction of many types of families that could act that way.