No, if you live your real life doing things in a certain way that is a real lifestyle which actually exists by virtue of that fact.
Being consciously pursued does not make it some kind of fiction, and if someone writes in a book that it does it doesn’t change that the ways real people actually live their lives are, ipso facto, real lifestyles that exist, it just means the book is wrong.
(It may be pursued out of nostalgia or yearning for a past, foreign, or imagined lifestyle that no longer exists, cannot exist in the immediate local conditions, or never existed, and may not acheive the goals for which it is pursued, which may especially be true if those goals are things that the model lifestyle achieved for reasons related to aspects that are not replicated or of the context of the model lifestyle which are not present in the context of the real and present one, but that’s a different issue from whether the lifestyle is, in fact, a real one which exists.)