Age counts and will always count, obviously in recent years this has stopped having a greater weight and clients have been more flexible with models.
The problem with Doutzen is that I think she herself doesn't want to work as much anymore or the second option is that clients don't want to work with her because of everything she said. Instagram would certainly help a lot, since it has millions of followers.
She hasn't been working as much lately, I think it's ok for her to do 5 shows per season, I just wanted her to go back to how she was before the pandemic.