Reporting this as an issue and not a feature request. Please let me know if I should do otherwise. Sequel Pro was abandoned by the original team on 6.2020 (https://github.com/sequelpro/sequelpro/issues/3705)
It had been forked by a new team and dubbed Sequel Ace (https://github.com/Sequel-Ace/Sequel-Ace). It’s also available in the APP store (https://apps.apple.com/us/app/sequel-ace/id1518036000?ls=1). It would be great to remove the native support for Sequel Pro since it’s no longer maintained and change the quick link to Sequel Ace, or simply provide manual connection instructions for other clients.