You're fine**. That dude is not. There is a lot on the world that is _not to be celebrated_, which might be interpreted as bitterness, but really it is a rational assessment and a human reaction.
I'm a dude with kids, and I've been supremely alarmed about climate change for 30 years. First I was told to "stop whining", which seemed to flip into "it's too late; I'm buying an SUV".
So, there's a lot of A-holes out there. Their punishments is that they get to stay that way.
Everyone else can at least walk away.
** and even this is an assumption. Apologies if it's a presumption, but I feel it's better to err on the side of treating your interlocutor as, well .. OK and thereby deserving of your attention.