The "miniscule risk to others" argument can be extended to literally any intrusion on personal liberty, and is exactly why I hope society looks back on this trend with horror and regret.
How far do you take this logic? Do I have to quarantine myself for 14 days after going to the park? Home Depot? A restaurant? If not, why not? I can catch Covid every time I leave my home. Must I lock myself indoors forever, or is it just for things that other people don't approve of?
If your date is a walk in the park six feet apart, then great, you're probably fine.
If your date involves touching, hugging, kissing, or vigorous sex in a small bedroom for more than 15 minutes, then you have a much higher chance of spreading the virus.
Here's a suggestion: Have some empathy and consider that it's highly likely that you have knowingly or unknowingly made plenty of mistakes over the year that have contributed to the spread of COVID.
Yeah I get it, it sucks, you can't have random hookups. I feel for you, I really do. There's lots of things I can't do either. But if we all sacrifice a bit, this will be over sooner. We've all had to change our lives during this pandemic. You're not unique in your suffering.
That's fine if it was just a risk to them. But it's not, unless they decide to live together and never leave the house after their first date, or quarantine for 14 days after every date.