Height is very important for a man in dating and at 171 cm, one can slay for sure if he's decent facially and has great body and skeletal frame with nice tan and tattoos, wears masculine clothes and excels in communication and seduction skills, although going out at night lifts will be mandatory at that height in order to not appear too short next to 170+ women with heels.
The issue arises when you want to LTR the woman of your choice. At 171 cm, no matter how handsome you are or how great your body frame is, you will still get intro many troubles (not as much if you were below 170 cm but nevertheless, it's still an issue below 175 cm). You have to compensate like crazy, i.e. be an influencer or have a status in general, have wealth or be some sort of authority (either at government level or in criminal world).
For slaying consistently, at least 173 cm is needed with good body proportions. Below that you might get occasional lays, but you'll struggle a lot. And I'm talking about above average male here in terms of face and body frame / muscle insertions. Below 173 cm is brutal in the west. I'm 165 cm with great body frame and very masculine face but it's very hard to slay consistently in the west at this height, even if I had Brad Pitt's face. I think I would slay hard in SEA at this height but I'm not going to relocate there permanently as I prefer to get double LL of at least 4.5 inches, recover and slay here where I live rather than move in Asian countries and settle there.
For LTR my height has always held me back as girls not only think about themselves in that scenario but also of what their friends and family will think when she shows a man to them this short at her side.
173 cm is a bare minimum IMO in the west in order to compensate with other things and be seen as an LTR material from a girl and to be respected by their family. 165 cm is brutal height outside of SEA, there's no question about it.
I'd rather get double LL and stand at 11.5 cm taller to become average height with good leg-to-body ratio rather than get a status and money in order to compensate in that way. I'm too vain and I wan't to do this for myself, to feel better about my body image, not only for getting puissy at a steady rate. Although at this height with status and money I can get unlimited amount of puissy but as I said, I prefer being the best version of myself physically so getting double LL is what I'm going to invest a lot, despite the time and efforts it takes to complete the process and recover.