The Best Buy guy was probably mistaking the XPS 15 for the XPS 13 Plus (9320).

The XPS 13 Plus (9320) is sort of being recalled, at least by Best Buy. Here is a post on Reddit about Best Buy recalling the sales of the XPS 13 Plus:

• Interesting... - Dell XPS 13 Plus Recall (9320 - My BestBuy Order)

And this is an article from The Verge describing what the actual problem is:

• Some Dell XPS 13 Plus screens have a glue problem

"The company is ‘proactively reaching out’ to impacted customers"

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