Unlike the spoken "whatever," which can sound dismissive or passive-aggressive, wtv in text usually just signals low stakes. "Come thru at 8 or wtv" means the details are flexible. It is texting shorthand that migrated into public comment sections.
You will often see it trailing a list of options or attached to plans that are not fully formed. Brands rarely use it, but creators use it to keep captions conversational and unbothered — part of the broader trend of deliberately lowercase, low-effort-looking caption styles.
