I've actually never had it trip any bot detection, captchas, or anything like that, and haven't built anything into it for evading detection. If I had to guess, it's because I make sure to manually sign in to my Walmart account before it begins adding things to the cart.
Not on macOS but have my own browser extension basically doing the same with Firefox, for use with agents.
It's using a clone of my real Firefox profile, and can "ping" me if it encounters a page that needs my human input, like a login page (as I don't give it access to my password manager) or captcha page. Although sometimes it "bypasses" the captcha page by itself, even though I've instructed it not to...
