I only know one REI, the local shop. There's so much employee turnover that it's inevitable customer experiences will vary tremendously. A friend was a mechanic at REI but went on to another job. For awhile that REI had no experienced mechanic, just young adults getting on the job training at bike assembly. Over the past three years, sometimes the shop has a trained, experienced mechanic, sometimes it doesn't.
Same with every department there. Sometimes you get an employee who actually has experience in the activity you're buying gear for, sometimes not. Some of them adhere to the no-pressure REI ethic, some of them are pushy like they're working on commission.
And it's not really a co-op. There isn't actually a workshop for "members" to learn to do their own bike maintenance. There's no procedure for checking in, using the shop tools, etc. When I was learning basic car maintenance as a teenager we had access to a real co-op, supervised by an experienced mechanic, with a complete Chilton's library, tools, the works. REI is not a co-op.
As Tacoenthusiast said, it's a tarted up Walmart in a fancy neighborhood. Our REI opened in one of those pricey shake-and-bake upper middle class pop-up condo communities with a shopping strip where neighbors could shop at REI, Whole Foods, and a revolving door of overpriced taco boutiques that shut down every six months as the fads fade. The pandemic is gonna kill that niche local economy that was based on promises and hot air. With luck an actual REI co-op in a working class warehouse will open up.