I am not an app developer.
But if you can wish for something as a user:
Can’t the completely outdated apps be thrown out of https://apps.nextcloud.com or at least hidden?
Examples:
https://apps.nextcloud.com/apps/ocr
Community Document Server - Apps - App Store - Nextcloud
How long would it take to clean up manually? Or how long would it take to program it? That would be an added value for the community.