As a man who is actively on the dating market... the number of women who care about lcimate change is absolutely zero. And bringing it up on a date is a surefire way of losing all interest of the woman. most ladies i see on apps or i have met IRL are seeking to speed run climate change via travel, luxury lifetyles, and over-consumption. so yeah, if you are against those things, you won't do very well on the dating market. trying to limit your footprint is very much 'gay' behaviour for a man seeking to win women over. i've never met a woman who was impressed by by eco-friendly hatchback, my living in small eco friendyl apartment, or my habit of composting. most find it repulsive and upsetting.
Women don't like men that care about things other than them. If you framed it as 'babe i want to protect you from the climate change' she might be into it, but if you are caring more about other people than her she will find in unattractive and you'll probably come across as self-righteous and pedant rather than as caring.