The culture on sales teams is to pump up successes, and job postings always demand over-quota applicants.
What happens to those SDRs with call reluctance (and a team that can't support them through it)? What happens to AEs who aren't meeting quota (and a product that sucks, maybe)? What about CSMs and AMs who can't retain or upsell (maybe because they were handed a bunch of customers who didn't need the product)?
What career paths do those people end up on?