I'm no particular JIRA fan and have had the misfortune of having had to administer an on-prem instance of it but the people who complain about it have clearly never used TFS or the bespoke solutions hacked together from off-the-shelf software (Domino, Sharepoint, Notion) that I've been exposed to. JIRA's a solid 6.8/10 and has always been far down the list of things that I'd change at any job I've had that uses it.
I can appreciate preferring customizable tools, but if I were to personally choose for the company I'd prefer a constrained and opinionated one. Not coincidentally, this is analogous to the choice many companies make in their programming languages / linters the team's use.
My guess is you wanted a Kanban board but didn't realize you can change the standard ticket view to a board view? If you're in the Active issue view for your team you can click the boxes icon at the top right (or hit cmd-b) to get a kanban view.
I first opened my personal Linear account in 2020 and the default was no Cycles. I created a new team in that account today and it's the default.
I opened new one somewhat recently (2 months ago) for my company and the default was to have them off too.
The docs for Cycles say that here too: https://linear.app/docs/use-cycles#configure
Maybe you didn't have admin permissions on your team? Not sure.
Linear is essentially a mildly opinionated and hyper fast version of Jira. It will be immediately familiar to anyone coming from Jira, which is a really great thing for adoption.
Don't underestimate the speed feature. The effect here has been that people stop using Jira and only use it at a bare minimum as required by management. People end up moving all of their planning and notes to things like Google Sheets, random docs, or just Apple Notes. Linear is so fast and easy to use I found I was back to doing planning and notes live in the tool because it was easier.
Highly recommend you give it a try. My company is unfortunately already heavily entrenched in Jira and I found a vast amount of work to move us all so I had to abandon our move.