I asked Ai the how to get those nice discreet hashtags in grey boxes beneath the post instead of bright purple hyperlinks. The Answer -
This is a feature that was added to Mastodon to improve the user experience. To get hashtags to appear in the small gray boxes beneath your post, you simply need to put them at the end of your post on a separate line, with a blank line separating them from the main body of your text.

For example, your post would be formatted like this:

This is the main body of my post, with all my thoughts and information.

#hashtagone #anotherhashtag #finaltag

This works on the official Mastodon web interface and many third-party apps. Keep in mind that putting hashtags in this way is generally better for readability and makes your post look cleaner.

#looksclean #canwealldothis