Sure, but I'll bet you that in a year or two a number of other websites with a differently styled X logo are going to get letters threatening them for having "confusingly similar" stylized X logos. Heck, "the same sequence of characters in a differently stylized font" is an example of something that fails the likelihood of confusion test on the USPTO website: https://www.uspto.gov/trademarks/search/likelihood-confusion

But then we get into the "relatedness of goods and services" test. What is X trademarking here? Well, according to the application, it covers everything in the mother of all run on sentences, including "Computer software for...displaying...video."

So, then, is this logo likely to be confused with any other website that displays videos and has an X for a logo? Because there are a whole bunch of (mostly porn) websites that would seem to be covered.

But for what it's worth, trademark seems to be a very nuanced and fact-specific area of law, and I'm a layman looking at USPTO websites, so I'm entirely out of my element here and somebody can hopefully correct me.