Oh, for sure, I'm not saying this approach won't work for you. I'm saying that if you're using that approach you're being using strategies designed mostly by abusers, that are inherently abusive (now, whether you are an abuser depends on whether you realise that and whether you stick to it after realising that), and that you _shouldn't do that_.
> You're not going to befriend everyone you talk to, but you're not going to befriend anyone you don't talk to.
I don't have to try and befriend everyone I meet. There are social contexts specifically designed for making new friendships, and quite helpfully they usually also provide a framework for approaching new people. And between meetup.com, OkCupid, interest-specific subreddits, Discords and Twitter, it's easier than ever to find should spaces that are tailored to however specific your social needs are. There's zero excuse for cold approach.