It’s great that more people are moving to Mastodon, but that influx has already resulted in far more posts with pictures that have no Alt Text description.
If you’ve just moved here, please bear in mind that there are a lot of visually impaired screen reader users here, and because Mastodon is far more inclusive than Twitter, it is considered polite to describe what your pictures show. Thank you, and welcome to a nicer social media platform. Please help keep it that way.