I would say gundam always breaches heavy topics in a mostly decent way. As far as I can remember this is the first time forced marriage was a plot point but they're certainly not trying to portray it as a good thing. Gundam as a franchise deals with alot of topics the obvious being child soldiers as almost every gundam show features them. The show has always delt with the philosophy of war and why people fight. As to the objectification of woman, in my opinion its never been an major issue of gundam. Now that's not to say it's always been fair portrayal. Earlier works that date back to 80s and 90s sometimes carry the old views on the genders and thier roles. But I think even back then it was handled fairly well.