Disney's 2019 Annual Report [0] shows total revenues of $26B for their Parks, Experiences and Products segment. Within that, revenues for admissions are $7.5B, merchandise/food/beverage $6B, resorts/vacations $6B, and some miscellaneous licensing $6.5B.
An industry or market research company reports [1] visitation in 2019 of 155MM. I'm assuming this is somewhat accurate.
Admissions revenues per visitor are around $50, compared to a cost of $150 or so quoted in the article; TFA might be overpaying for tickets. The resorts/vacations (I assume this means hotels) revenue is $40 per visitor or $160 for a family of 4 for 1 night. This, combined with the prevalence of <$200/night hotels near Disneyland [2] suggests to me that not all visitors are staying in the Disney hotels, and the ones who aren't may be paying less than the $450 from TFA.
All this to say that the current costs for Disney are likely lower than what TFA suggests, unclear by how much.
[0] - https://thewaltdisneycompany.com/app/uploads/2020/01/2019-An...
[1] - https://www.teaconnect.org/images/files/TEA_369_258927_20071...
[2] - https://www.google.com/maps/search/Hotels/@33.8029354,-117.9...