Oh, it most definitely is scummy. It’s no news that Tinder does not care about people well-beings. Actually, they want you to get stuck to the platform as long as you can; if everyone was finding their partner after a week their platform would not be profitable anymore.
On Tinder it would not be in the same context that what you experienced. In OKCupid it’s part of the rules that you can send messages without a match. So people are OK (I guess) with it. On Tinder it’s going to come as unexpected and unwelcome. You will start with a disadvantage. Unless the woman is only interested in money (if you can spend $500/month on an app then you are probably among the wealthier half of the population).
I do not get why it would work in that case. I assume the scenario is someone with a bike coming, doing theft, then leaving with the same bike.
Therefore there will be a period without bike, then a period with bike, then a period without bike again.
Let’s assume there is no bike on the particular moment viewed. How do you know whether it occured before or after the theft? If you make the wrong decision, you get stuck on an endless binary search… Unless you take note at each timestamp where you made the decision, draw a tree of timestamps, and go back the tree if your search is fruitless but that’s much more complicated than what this post says.