That is a fair point.
Personally in an ideal world, I would like to export all of my data from reddit before leaving, and then if later someone wants to host all of the dataset under a permissive open source license like I believe stackoverflow or wikipedia do, which is accessible to search engines, then scrub+anonymize my dataset and upload it there.
Obviously the issues with something like this are people uploading doctored data to poison the training models etc.
By when kagi is not available, do you mean it goes down or you run into quota limits? I've been thinking of giving it a go.