100% yes it is better to live in the city.
When I was divorced, I was in the burbs. It was an island. The women in the burbs were nearly all overweight and 4's acted like they were 9's. I VERY rarely saw women I would want to approach. During my ~1 year stint on Tinder/Bumble immediately after my divorce, all the girls I'd match with would live in the city so I was driving a ways to get to them and that made it even worse when they'd flake/ghost me after I drove all that way. Just maddening. Also girls have so many options that many set their radius REALLY short - like even 3-5 miles. They have so much abundance that they don't need to set their radius any higher than that.
I sold my house and bought a place in the city and it was life changing. Although I don't use OLD any more, I cold approach all the time out here and I can literally walk or drive 5 minutes and be in a crowded area full of women. There are more single women in the city than the burbs, and they tend to be more in shape. I can almost NEVER go to a brewery in the city and not see at least one approachable girl, or Target, Trader Joes, or Whole Foods in the city and not see at least 3+ approachable girls. They are much more open to talking too. I got off on a REALLY bad foot in my cold approach game in the 'burbs because I was getting rejected constantly. I learned it wasn't so much bad technique but just the difference between women in the 'burbs vs the city.
I disagree with the comments about city women all being liberal, or that all liberal women are bad options for dating. Just like everything, political, moral, and ideological positions are on a sliding scale. True, I myself would never date a third wave feminist or a girl who was a hardcore liberal, but I would say most of the girls I've dated have been moderate or slightly left of center and I didn't have any issues with them that could be traced back to their views (with the exception of my ex wife from before I became red pill aware).
I do recognize and understand the appeal and draw of small town women, however, that's not really the 'burbs. That's more of a rural situation. And while some of these old fashioned girls may be really good relationship material, you have to live in the country and you also have VERY little choice due to the low populations. Also, they aren't always all they are cracked up to be. I've dated a 23yo southern belle before and she had only one sexual partner (and she said she never enjoyed the sex with him and felt forced by him to do it), and was the kind of women who would refer to sex as "the dirty deed" (she didn't say that but you get my point). Some of these small town religious conservative girls have been brought up to think sex is a bad thing.