That’s not cynical.
That’s a reality-based observation, based upon observation of past instances.
A cynic is someone who thinks that only base desires (eg, for money, fame, wealth) motivates people’s actions. Here, both parties have plenty of wealth and fame, so that’s not a motivation. Saying that some bumpkin of a girl marrying a movie star just for the money - that’s cynical.
Noting that celebs seem to have a very elastic definition of “till death do us part” isn’t cynical - it is reality.
Carrie seems to have a good head on her shoulders and comes from a good family. I hope this works for them.
The one difference is that he’s a hockey player. They seem to be more down to earth than other pro athletes.