Tow has been a constraint since day 1. Doesn’t mean none get built. Just means it puts you at a disadvantage if you are not in allocation hell first. Even then it does not help you.
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The only reason to require tow is if you need the 7-way around of 5-way flat configuration. If you run the most common 4-way flat, you can add it later. My boat trailers are always 5-way so I was committed to the wait. I added a factory hitch system on my Mercedes GL550. Wound up costing over $1300 in parts, 4 hours of time, and a trip to the dealer ($150) to program the module. Never again.The tow package has been one of the biggest (if not the biggest) constraint of the past year. If you aren't doing any actually towing and only need a hitch for a bike rack or the like then I would consider deleting it and installing an aftermarket one.