This is spot on, I’ve used four Jira system that if I didn’t know they were all Jira, I would have though they were different products with similar “generic enterprise” styling. That being said, I’ve rather strongly disliked every instance of Jira I’ve used. It probably stems from the fact that I have maintained and built over a dozen ticketing systems over the years and some of the annoyances and rough edges just feel like solved problems to me.