Yes – Just like Bitbucket Issues didn't marry JIRA. One core difference between Trello and JIRA Agile is, in Trello you can't hide tickets that you don't want right now in the sprint – In JIRA Agile, you only put a few issues in the sprint so the board looks clean.
Anyway. Not sure why some people want to move away from Trello now. Is it that they don't want an identity connection between JIRA and Trello (SSO or similar)?
I think it's likely that people who use Trello appreciate the simplicity and Atlassian aren't exactly known for creating simple software (speaking as a past Jira user/admin).
I had the same feeling of "oh well, what else can I use in the future" when I read this post.
Anyway. Not sure why some people want to move away from Trello now. Is it that they don't want an identity connection between JIRA and Trello (SSO or similar)?