In the spirit of making suggestions, as this frustrated Rust developer was doing, and in the spirit of reducing vulnerabilities, as Rust itself is trying to do:
Screen shots on lemmy are mostly hosted on remote sites, so they don’t show up for people who block off-site media (e.g. to avoid tracking). They don’t work with screen readers (e.g. for the vision impaired). They don’t work with search at all.
And since Mastodon won’t show anything unless the visitor allows javascript, and since it’s a distributed platform instead of a single well-known site, a would-be visitor would have to allow javascript on random web sites in order to view Mastodon posts. That would expose them to tracking and browser exploits.
For these reasons, quoting the text you want to share would be better than screen shots or Mastodon links, for convenience, utility, and safety.