Guys walking out on toxic women on first dates, leaving them with the bill?

I've seen a few stories lately about guys saying they walked out in the middle of a first date. Claims were that the woman started playing with her phone, acting obnoxious with the staff, etc, and the guy just gets up and walks off, settles up his portion of the bill, and leaves her there to deal with her bill. Would you consider this extreme? Or just having standards?
If she's already acting toxic, just walk
At least stick out one date
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A few good examples here:

www.cosmopolitan.com/.../
Guys walking out on toxic women on first dates, leaving them with the bill?
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