This is according to a tweet by GJ Kooijman living in Amsterdam, where upon launching Disney+, he discovered that it played home to a ton of classic Marvel cartoons, like the X-Men and Spider-Man series from the 90s. If you grew up watching these shows, then this could be a nice throwback to the past.
However, we should note that generally speaking, the content from streaming services tend to vary from region to region. This is possibly due to copyright and licensing issues, so it is unclear as to whether these cartoons are limited to the Netherlands or if it will be a staple across all regions that Disney+ will be available in.
https://twitter.com/gjkooijman/status/1172015971785224192
The upside is that Disney+ will host content mostly owned by Disney, so hopefully content across all regions will be more uniform.