Hmm. Normally I'd be inclined to agree, but this really doesn't feel like it's punching at men or manliness. It's more just saying no one will find you attractive if you have a cybertruck. And we all know you can be a man as well as completely unfuckable at the same time.
Only because we associate sexuality and "getting laid" with manhood. They aren't the same. Are asexual men less men? No one's gatekeeping manhood in this image, they're gatekeeping sexuality.
It is not gatekeeping manhood, buying a Cybertruck is a clear sign that the man lacks common sense and has more money than brains, two very important red flags. The only women he will attract are the kind that like men with more money than brains. She is just setting her standards high.